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Finding the Fourth Proportional to 671.28, 925.90 and 546.94

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Solution

The fourth proportional to 671.28, 925.90 and 546.94 is: 754.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.28 : 925.90 = 546.94 : x
  2. Step 2: Convert to fraction form
    671.28/925.90 = 546.94/x
  3. Step 3: Cross multiply
    671.28x = 925.90 × 546.94
  4. Step 4: Simplify right side
    671.28x = 506,411.75
  5. Step 5: Solve for x
    x = 506,411.75/671.28
  6. Step 6: Final answer
    x = 754.40

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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.