Question

Find the mean proportion between50and98

Answer 1

Step-by-step explanation:

Let the mean proportion between 50 and 98 is x

50 : x :: x : 98

a : b :: c : d = a/b = c/d

50/x = x/98

cross multiplication

50*98 = x*x

4900 = x square

Now this square comes to LHS side and becomes root

√4900 = x

700 = x

Hence, the mean proportion between 50 and 98 is 700.

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