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Finding the Fourth Proportional to 546.71, 754.54 and 387.44

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Solution

The fourth proportional to 546.71, 754.54 and 387.44 is: 534.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.71 : 754.54 = 387.44 : x
  2. Step 2: Convert to fraction form
    546.71/754.54 = 387.44/x
  3. Step 3: Cross multiply
    546.71x = 754.54 × 387.44
  4. Step 4: Simplify right side
    546.71x = 292,334.24
  5. Step 5: Solve for x
    x = 292,334.24/546.71
  6. Step 6: Final answer
    x = 534.72

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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.