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Finding the Fourth Proportional to 363.42, 545.16 and 339.12

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Solution

The fourth proportional to 363.42, 545.16 and 339.12 is: 508.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.42 : 545.16 = 339.12 : x
  2. Step 2: Convert to fraction form
    363.42/545.16 = 339.12/x
  3. Step 3: Cross multiply
    363.42x = 545.16 × 339.12
  4. Step 4: Simplify right side
    363.42x = 184,874.66
  5. Step 5: Solve for x
    x = 184,874.66/363.42
  6. Step 6: Final answer
    x = 508.71

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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.