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Finding the Fourth Proportional to 542.45, 748.65 and 332.73

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Solution

The fourth proportional to 542.45, 748.65 and 332.73 is: 459.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.45 : 748.65 = 332.73 : x
  2. Step 2: Convert to fraction form
    542.45/748.65 = 332.73/x
  3. Step 3: Cross multiply
    542.45x = 748.65 × 332.73
  4. Step 4: Simplify right side
    542.45x = 249,098.31
  5. Step 5: Solve for x
    x = 249,098.31/542.45
  6. Step 6: Final answer
    x = 459.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.