Question

the first,second and third terms of a proportion are 20,10 and 50.find the fourth term.​

Answer 1

fourth term of the proportion is 100

Answer 2

The fourth term = 25

Step-by-step explanation:

Let the fourth proportion = x

To find, the fourth term = ?

∴ 20 : 10 : : 50 : x

We know that,

Product of means = Product of extrems

⇒ 20 × x = 10 × 50

⇒ 20x = 500

⇒ x $=\dfrac{500}{20}$

⇒ x = 25

The fourth term = 25

Thus, the fourth ter is 25.