Question

Find the mean proportion of 40 and 10 .

I want Step by step explanation ​

Answer 1

Answer:

20

Step-by-step explanation:

Let, the mean proportional between 10 and 40 be ‘ a ‘. 10 : a :: a : 40. (Product of extremes = Product of means) Here, Extremes are 10 and 40. Means are a and a. 10 x 40 = a x a. a² = 10 x 40 = 400. a = 20. Hence, the value of ‘a’ is 20