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Finding the Fourth Proportional to 461.96, 694.02 and 426.32

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Solution

The fourth proportional to 461.96, 694.02 and 426.32 is: 640.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.96 : 694.02 = 426.32 : x
  2. Step 2: Convert to fraction form
    461.96/694.02 = 426.32/x
  3. Step 3: Cross multiply
    461.96x = 694.02 × 426.32
  4. Step 4: Simplify right side
    461.96x = 295,874.61
  5. Step 5: Solve for x
    x = 295,874.61/461.96
  6. Step 6: Final answer
    x = 640.48

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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.