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Finding the Fourth Proportional to 239.79, 332.19 and 234.12

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Solution

The fourth proportional to 239.79, 332.19 and 234.12 is: 324.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.79 : 332.19 = 234.12 : x
  2. Step 2: Convert to fraction form
    239.79/332.19 = 234.12/x
  3. Step 3: Cross multiply
    239.79x = 332.19 × 234.12
  4. Step 4: Simplify right side
    239.79x = 77,772.32
  5. Step 5: Solve for x
    x = 77,772.32/239.79
  6. Step 6: Final answer
    x = 324.34

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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.