RRB NTPC Mains or Stage 2 Model Paper 1 with solutions

Question : 44 of 120

Marks: +1, -0

Find the fourth proportional to 2, 4 and 8 .

Solution:

(3) If the fourth proportional be x, then

2/4 =8/x⇒1/2 =8/x

⇒ x = 2 × 8 = 16

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