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Finding the Fourth Proportional to 239.74, 332.60 and 231.10

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Solution

The fourth proportional to 239.74, 332.60 and 231.10 is: 320.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.74 : 332.60 = 231.10 : x
  2. Step 2: Convert to fraction form
    239.74/332.60 = 231.10/x
  3. Step 3: Cross multiply
    239.74x = 332.60 × 231.10
  4. Step 4: Simplify right side
    239.74x = 76,863.86
  5. Step 5: Solve for x
    x = 76,863.86/239.74
  6. Step 6: Final answer
    x = 320.61

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.