Math CentralQuandaries & Queries


Question from Ashleigh, a student:

Hi, I am dealing with ratios of me and 9 other students. I was wondering how you turn an arm span and height into a ratio? for example if a person has a height of 62 and an arm span of 63 what would the ratio be for that?

Hi Ashley,

You could say the ratio of her height to her arm span is 62:63. You could convey the same information as a fraction by saying that her height is 62/63 of her arm span. Since 62/63 = 0.98 you could also say that her height is 98% of her arm span.

You might also turn this around and say that the ratio of her arm span to her height is 63:62.

I hope this helps,

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