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Finding the Fourth Proportional to 425.77, 587.49 and 239.26

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Solution

The fourth proportional to 425.77, 587.49 and 239.26 is: 330.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.77 : 587.49 = 239.26 : x
  2. Step 2: Convert to fraction form
    425.77/587.49 = 239.26/x
  3. Step 3: Cross multiply
    425.77x = 587.49 × 239.26
  4. Step 4: Simplify right side
    425.77x = 140,562.86
  5. Step 5: Solve for x
    x = 140,562.86/425.77
  6. Step 6: Final answer
    x = 330.14

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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.