Topic: proportional list of topics
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11 items are filed under this topic.

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	Sharing the profit		2012-05-14
		From Mafiza: A and B started a business by investing $6000 and $8000 respectively. At the end of the year, a profit of $2100 is made. How much amount will A get as his share of profit? Answered by Penny Nom.
	The length is inversely proportional to the width		2012-03-18
		From David: For a given set of rectangles, the length is inversely proportional to the width. In one of these rectangles, the length is12 and the width is 6. For this set of rectangles, calculate the width of a rectangle whose length is 9 Answered by Penny Nom.
	If x ix directly proportional to y then ...		2012-02-19
		From Crystal: I understand that we say x and y are proportional, then y = kx. Generally when we say x is proportional to y, we think that when x increases y increases. Now I am questioning whether that is actually true. If k is negative, then when x increases, y DECREASES. My question is does this mean this statement is incorrect: If x is proportional to y, when x increases, y increases proportionally. Is it more correct to say: If x is proportional to y, when x increases, y either increases proportionally or decreases proportionally. Along the same line of reasoning, when x is inversely proportional to y, we think that when x increases y decreases, but that is true only if k is positive. Is that correct? Answered by Harley Weston.
	Proportionality		2010-02-27
		From Nazrul: If a is proportional to b then how can I prove that (a^2-b^2) is proportional to ab. Please show me the process in details. Answered by ms. Dame and Tyler Wood.
	Proportionality		2009-11-03
		From Nazrul: If x is proportional to y , how can I prove that (x^2-y^2) is proportional to xy. Please explain the process. Answered by Penny Nom.
	Proportionality		2009-06-29
		From Nazrul: If x is proportional to y and y is proportional to z , how can I prove that (x^2+y^2)^3/2 is proportional to z^3 Answered by Harley Weston.
	Direct, inverse and indirect proportionality		2009-03-04
		From Brian: My 14 year old is confused about indirectly proportional and inversely proportional. On searching on the internet we were directed to: http://mathcentral.uregina.ca/QQ/database/QQ.09.00/ellis1.html Here leanne starts explaining indirectly proportional and ends up describing inversely proportional. Has Leanne got it wrong ? What is indirectly proportional. Thanks Brian Answered by Chris Fisher.
	Similar Triangles Given a Median		2008-08-17
		From RAM: Sides AB , AC and median AD of a triangle ABC are respectively proportional to PQ PR and median PM of another triangle PQR. Show that ABC is similar to PQR Answered by Janice Cotcher.
	Arithmetic means and geometric means		2007-04-04
		From Dani: Hi! I was just wondering why the arithmetic mean of sets of numbers is larger than the mean proportional of the same numbers? Thanks! Dani Answered by Haley Ess.
	Ratio and proportion		2001-10-10
		From Steve: Where would you use a proportion and/or a ratio in a real life job or problem. Answered by Leeanne Boehm and Walter Whiteley.
	Proportionality: direct and indirect		2001-01-18
		From Nancy Ellis: What is the difference between directly proportional and indirectly proportional? Answered by Leeanne Boehm.

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