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Finding the Fourth Proportional to 627.38, 939.33 and 472.83

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Solution

The fourth proportional to 627.38, 939.33 and 472.83 is: 707.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.38 : 939.33 = 472.83 : x
  2. Step 2: Convert to fraction form
    627.38/939.33 = 472.83/x
  3. Step 3: Cross multiply
    627.38x = 939.33 × 472.83
  4. Step 4: Simplify right side
    627.38x = 444,146.48
  5. Step 5: Solve for x
    x = 444,146.48/627.38
  6. Step 6: Final answer
    x = 707.94

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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.