4th proportional to 4, 16, 7

Question: 4th proportional to 4, 16, 7
  • A. 25
  • B. 28 ✓
  • C. 29
  • D. 22
Correct Answer: B. 28
Explanation: 4:16 = 7:x → x = (16×7)/4 = 28.

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