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Finding the Fourth Proportional to 426.64, 588.79 and 249.61

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Solution

The fourth proportional to 426.64, 588.79 and 249.61 is: 344.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.64 : 588.79 = 249.61 : x
  2. Step 2: Convert to fraction form
    426.64/588.79 = 249.61/x
  3. Step 3: Cross multiply
    426.64x = 588.79 × 249.61
  4. Step 4: Simplify right side
    426.64x = 146,966.71
  5. Step 5: Solve for x
    x = 146,966.71/426.64
  6. Step 6: Final answer
    x = 344.47

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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.