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Finding the Fourth Proportional to 546.04, 819.42 and 438.76

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Solution

The fourth proportional to 546.04, 819.42 and 438.76 is: 658.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.04 : 819.42 = 438.76 : x
  2. Step 2: Convert to fraction form
    546.04/819.42 = 438.76/x
  3. Step 3: Cross multiply
    546.04x = 819.42 × 438.76
  4. Step 4: Simplify right side
    546.04x = 359,528.72
  5. Step 5: Solve for x
    x = 359,528.72/546.04
  6. Step 6: Final answer
    x = 658.43

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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.