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Finding the Fourth Proportional to 363.87, 545.82 and 89.97

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Solution

The fourth proportional to 363.87, 545.82 and 89.97 is: 134.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.87 : 545.82 = 89.97 : x
  2. Step 2: Convert to fraction form
    363.87/545.82 = 89.97/x
  3. Step 3: Cross multiply
    363.87x = 545.82 × 89.97
  4. Step 4: Simplify right side
    363.87x = 49,107.43
  5. Step 5: Solve for x
    x = 49,107.43/363.87
  6. Step 6: Final answer
    x = 134.96

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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.