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Finding the Fourth Proportional to 674.43, 931.11 and 425.97

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Solution

The fourth proportional to 674.43, 931.11 and 425.97 is: 588.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.43 : 931.11 = 425.97 : x
  2. Step 2: Convert to fraction form
    674.43/931.11 = 425.97/x
  3. Step 3: Cross multiply
    674.43x = 931.11 × 425.97
  4. Step 4: Simplify right side
    674.43x = 396,624.93
  5. Step 5: Solve for x
    x = 396,624.93/674.43
  6. Step 6: Final answer
    x = 588.09

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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.