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Finding the Fourth Proportional to 234.06, 350.96 and 87.69

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Solution

The fourth proportional to 234.06, 350.96 and 87.69 is: 131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    234.06 : 350.96 = 87.69 : x
  2. Step 2: Convert to fraction form
    234.06/350.96 = 87.69/x
  3. Step 3: Cross multiply
    234.06x = 350.96 × 87.69
  4. Step 4: Simplify right side
    234.06x = 30,773.93
  5. Step 5: Solve for x
    x = 30,773.93/234.06
  6. Step 6: Final answer
    x = 131.48

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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.