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Finding the Fourth Proportional to 426.27, 588.25 and 239.75

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Solution

The fourth proportional to 426.27, 588.25 and 239.75 is: 330.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.27 : 588.25 = 239.75 : x
  2. Step 2: Convert to fraction form
    426.27/588.25 = 239.75/x
  3. Step 3: Cross multiply
    426.27x = 588.25 × 239.75
  4. Step 4: Simplify right side
    426.27x = 141,034.81
  5. Step 5: Solve for x
    x = 141,034.81/426.27
  6. Step 6: Final answer
    x = 330.86

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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.