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Finding the Fourth Proportional to 546.93, 754.31 and 487.20

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Solution

The fourth proportional to 546.93, 754.31 and 487.20 is: 671.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    546.93 : 754.31 = 487.20 : x
  2. Step 2: Convert to fraction form
    546.93/754.31 = 487.20/x
  3. Step 3: Cross multiply
    546.93x = 754.31 × 487.20
  4. Step 4: Simplify right side
    546.93x = 367,497.40
  5. Step 5: Solve for x
    x = 367,497.40/546.93
  6. Step 6: Final answer
    x = 671.93

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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.