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Finding the Fourth Proportional to 363.85, 545.92 and 190.42

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Solution

The fourth proportional to 363.85, 545.92 and 190.42 is: 285.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.85 : 545.92 = 190.42 : x
  2. Step 2: Convert to fraction form
    363.85/545.92 = 190.42/x
  3. Step 3: Cross multiply
    363.85x = 545.92 × 190.42
  4. Step 4: Simplify right side
    363.85x = 103,952.25
  5. Step 5: Solve for x
    x = 103,952.25/363.85
  6. Step 6: Final answer
    x = 285.70

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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.