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Finding the Fourth Proportional to 627.53, 939.20 and 349.44

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Solution

The fourth proportional to 627.53, 939.20 and 349.44 is: 522.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.53 : 939.20 = 349.44 : x
  2. Step 2: Convert to fraction form
    627.53/939.20 = 349.44/x
  3. Step 3: Cross multiply
    627.53x = 939.20 × 349.44
  4. Step 4: Simplify right side
    627.53x = 328,192.30
  5. Step 5: Solve for x
    x = 328,192.30/627.53
  6. Step 6: Final answer
    x = 522.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.