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Finding the Fourth Proportional to 332.38, 499.38 and 271.90

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Solution

The fourth proportional to 332.38, 499.38 and 271.90 is: 408.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.38 : 499.38 = 271.90 : x
  2. Step 2: Convert to fraction form
    332.38/499.38 = 271.90/x
  3. Step 3: Cross multiply
    332.38x = 499.38 × 271.90
  4. Step 4: Simplify right side
    332.38x = 135,781.42
  5. Step 5: Solve for x
    x = 135,781.42/332.38
  6. Step 6: Final answer
    x = 408.51

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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.