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Finding the Fourth Proportional to 951.31, 1,427.07 and 326.74

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Solution

The fourth proportional to 951.31, 1,427.07 and 326.74 is: 490.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.31 : 1,427.07 = 326.74 : x
  2. Step 2: Convert to fraction form
    951.31/1,427.07 = 326.74/x
  3. Step 3: Cross multiply
    951.31x = 1,427.07 × 326.74
  4. Step 4: Simplify right side
    951.31x = 466,280.85
  5. Step 5: Solve for x
    x = 466,280.85/951.31
  6. Step 6: Final answer
    x = 490.15

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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.