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Finding the Fourth Proportional to 627.29, 939.13 and 473.87

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Solution

The fourth proportional to 627.29, 939.13 and 473.87 is: 709.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.29 : 939.13 = 473.87 : x
  2. Step 2: Convert to fraction form
    627.29/939.13 = 473.87/x
  3. Step 3: Cross multiply
    627.29x = 939.13 × 473.87
  4. Step 4: Simplify right side
    627.29x = 445,025.53
  5. Step 5: Solve for x
    x = 445,025.53/627.29
  6. Step 6: Final answer
    x = 709.44

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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.