Question

The first, third and fourth terms of a proportion are 56, 49 and 70 respectively. Find the second term.
Give me just a brief explanation but at first the answer.

Answer 1

Given :-

The first , third , fourth terms of proportion are 56 , 49 and 70 .

Solution :-

Here , The first term , third term and fourth term is 56 , 49 and 70

Let the second term be x

Thus , 56 , x , 49 , 70 are in proportion

Now , Product of extreme terms = 56 * 70

Product of mean terms = x * 40

Since , The numbers are in proportion

56 * 70 = x * 40

3920 = 40x

x = 3920/40

x = 98

Thus , The second term is 98