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Finding the Fourth Proportional to 239.31, 356.85 and 233.17

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Solution

The fourth proportional to 239.31, 356.85 and 233.17 is: 347.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.31 : 356.85 = 233.17 : x
  2. Step 2: Convert to fraction form
    239.31/356.85 = 233.17/x
  3. Step 3: Cross multiply
    239.31x = 356.85 × 233.17
  4. Step 4: Simplify right side
    239.31x = 83,205.82
  5. Step 5: Solve for x
    x = 83,205.82/239.31
  6. Step 6: Final answer
    x = 347.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.