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Finding the Fourth Proportional to 239.86, 331.09 and 232.16

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Solution

The fourth proportional to 239.86, 331.09 and 232.16 is: 320.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.86 : 331.09 = 232.16 : x
  2. Step 2: Convert to fraction form
    239.86/331.09 = 232.16/x
  3. Step 3: Cross multiply
    239.86x = 331.09 × 232.16
  4. Step 4: Simplify right side
    239.86x = 76,866.10
  5. Step 5: Solve for x
    x = 76,866.10/239.86
  6. Step 6: Final answer
    x = 320.47

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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.