Question

mean propotion between 5/28 and20/63​

Answer 1

Answer:

5/21

Step-by-step explanation:

Let the mean proportional be a

so, as per the formula

product of means = product of extremes ( product = multiplication)

a x a = 5/28 x 20/63 ( mean proportion is always multiplied by itself)

a square = 5 x 20/ 28 x 63

a square = 100/1764

a = ✓100/ ✓1764 ( square becomes square root on the other side)

a = 10/42 ( square root of 100 = 10 and of 1764 = 42)

a = 5/21 (simplifying)

I hope it helps