Question

Find the mean proportion between 17.5 and 0.007

Answer 1

Let the mean proportional between 17.5 and 0.007 be x.

⟹ 17.5, x and 0.007 are in continued proportion

. ⟹ 17.5 : x = x: 0.007

⟹ x × x = 17.5 × 0.007

⟹ x2 = 0.1225

⟹ x = 0.35

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