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Finding the Fourth Proportional to 542.46, 809.34 and 518.52

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Solution

The fourth proportional to 542.46, 809.34 and 518.52 is: 773.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.46 : 809.34 = 518.52 : x
  2. Step 2: Convert to fraction form
    542.46/809.34 = 518.52/x
  3. Step 3: Cross multiply
    542.46x = 809.34 × 518.52
  4. Step 4: Simplify right side
    542.46x = 419,658.98
  5. Step 5: Solve for x
    x = 419,658.98/542.46
  6. Step 6: Final answer
    x = 773.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.