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Finding the Fourth Proportional to 627.17, 939.38 and 301.85

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Solution

The fourth proportional to 627.17, 939.38 and 301.85 is: 452.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.17 : 939.38 = 301.85 : x
  2. Step 2: Convert to fraction form
    627.17/939.38 = 301.85/x
  3. Step 3: Cross multiply
    627.17x = 939.38 × 301.85
  4. Step 4: Simplify right side
    627.17x = 283,554.78
  5. Step 5: Solve for x
    x = 283,554.78/627.17
  6. Step 6: Final answer
    x = 452.12

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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.