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Finding the Fourth Proportional to 502.38, 753.39 and 394.38

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Solution

The fourth proportional to 502.38, 753.39 and 394.38 is: 591.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.38 : 753.39 = 394.38 : x
  2. Step 2: Convert to fraction form
    502.38/753.39 = 394.38/x
  3. Step 3: Cross multiply
    502.38x = 753.39 × 394.38
  4. Step 4: Simplify right side
    502.38x = 297,121.95
  5. Step 5: Solve for x
    x = 297,121.95/502.38
  6. Step 6: Final answer
    x = 591.43

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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.