Question

the first,second and fourth terms of a proportion are 5,30 and 6 respectively.the third term is :
(a)1
(b)2
(c)15
(d)3

Answer 1

Step-by-step explanation:

the the answer is 15

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Answer 2

Given :

⬤ First , Second and Fourth term of Proportion are 5 , 30 and 6 .

To Find :

⬤ Third Proportion .

Solution :

• First Term = 5
• Second Term = 30
• Third Proportion = ?
• Fourth Term = 6

Let :

• Third term be = x

Now :

5 : 30 :: x : 6

$\bf{Product \: of \: Extremes = Product \: of \: Means}$

(5 × 6) = (30 × x)

x = 5 × 6/30

x = 1

Therefore , The Third Term of Proportion (x) is 1.

Correct Option is a) 1 .

Check :

5 : 30 :: 1 : 6

Product of Extremes = Product of Means

(5 × 6) = (1 × 30)

30 = 30

Hence Checked .