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Finding the Fourth Proportional to 363.38, 542.23 and 355.10

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Solution

The fourth proportional to 363.38, 542.23 and 355.10 is: 529.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.38 : 542.23 = 355.10 : x
  2. Step 2: Convert to fraction form
    363.38/542.23 = 355.10/x
  3. Step 3: Cross multiply
    363.38x = 542.23 × 355.10
  4. Step 4: Simplify right side
    363.38x = 192,545.87
  5. Step 5: Solve for x
    x = 192,545.87/363.38
  6. Step 6: Final answer
    x = 529.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.