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Finding the Fourth Proportional to 233.97, 350.90 and 87.69

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Solution

The fourth proportional to 233.97, 350.90 and 87.69 is: 131.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.97 : 350.90 = 87.69 : x
  2. Step 2: Convert to fraction form
    233.97/350.90 = 87.69/x
  3. Step 3: Cross multiply
    233.97x = 350.90 × 87.69
  4. Step 4: Simplify right side
    233.97x = 30,770.15
  5. Step 5: Solve for x
    x = 30,770.15/233.97
  6. Step 6: Final answer
    x = 131.52

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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.