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Finding the Fourth Proportional to 363.38, 545.07 and 89.47

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Solution

The fourth proportional to 363.38, 545.07 and 89.47 is: 134.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.38 : 545.07 = 89.47 : x
  2. Step 2: Convert to fraction form
    363.38/545.07 = 89.47/x
  3. Step 3: Cross multiply
    363.38x = 545.07 × 89.47
  4. Step 4: Simplify right side
    363.38x = 48,769.12
  5. Step 5: Solve for x
    x = 48,769.12/363.38
  6. Step 6: Final answer
    x = 134.21

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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.