Question

Qno1) The first second and fourth term of a proportion are 5,10 and 20 respectively. Find the third term.​

Answer 1

Answer:

Given that ;

First term = 5

Second term = 10

Fourth term = 20

Let ;

The third term = x

• The four terms in proportion

5 : 10 : : x : 20

Product of Means = Product of Extremes

10 × x = 5 × 20

10x = 100

x = 100 / 10

x = 10

Hence ;

The third term ( x ) = 10

Answer 2

Answer:

10

Step-by-step explanation:

If a : b = c : d are in proportion then a/b = c/d

i.e ad = bc

Product of extremes = Product of means

5 : 10 : x : 20

→ 10x = 100

→ x = 10

Hence the third proportion is 10