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Finding the Fourth Proportional to 755, 1,132.32 and 234.86

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Solution

The fourth proportional to 755, 1,132.32 and 234.86 is: 352.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    755 : 1,132.32 = 234.86 : x
  2. Step 2: Convert to fraction form
    755/1,132.32 = 234.86/x
  3. Step 3: Cross multiply
    755x = 1,132.32 × 234.86
  4. Step 4: Simplify right side
    755x = 265,936.68
  5. Step 5: Solve for x
    x = 265,936.68/755
  6. Step 6: Final answer
    x = 352.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.