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Finding the Fourth Proportional to 2,234.21, 3,350.87 and 753.28

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Solution

The fourth proportional to 2,234.21, 3,350.87 and 753.28 is: 1,129.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,234.21 : 3,350.87 = 753.28 : x
  2. Step 2: Convert to fraction form
    2,234.21/3,350.87 = 753.28/x
  3. Step 3: Cross multiply
    2,234.21x = 3,350.87 × 753.28
  4. Step 4: Simplify right side
    2,234.21x = 2,524,149.85
  5. Step 5: Solve for x
    x = 2,524,149.85/2,234.21
  6. Step 6: Final answer
    x = 1,129.78

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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.