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Finding the Fourth Proportional to 426.41, 588.38 and 239.90

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Solution

The fourth proportional to 426.41, 588.38 and 239.90 is: 331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.41 : 588.38 = 239.90 : x
  2. Step 2: Convert to fraction form
    426.41/588.38 = 239.90/x
  3. Step 3: Cross multiply
    426.41x = 588.38 × 239.90
  4. Step 4: Simplify right side
    426.41x = 141,148.22
  5. Step 5: Solve for x
    x = 141,148.22/426.41
  6. Step 6: Final answer
    x = 331.02

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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.