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Finding the Fourth Proportional to 426.44, 588.44 and 239.90

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Solution

The fourth proportional to 426.44, 588.44 and 239.90 is: 331.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.44 : 588.44 = 239.90 : x
  2. Step 2: Convert to fraction form
    426.44/588.44 = 239.90/x
  3. Step 3: Cross multiply
    426.44x = 588.44 × 239.90
  4. Step 4: Simplify right side
    426.44x = 141,164.41
  5. Step 5: Solve for x
    x = 141,164.41/426.44
  6. Step 6: Final answer
    x = 331.03

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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.