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Finding the Fourth Proportional to 2,216.80, 3,324.25 and 755.29

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Solution

The fourth proportional to 2,216.80, 3,324.25 and 755.29 is: 1,132.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,216.80 : 3,324.25 = 755.29 : x
  2. Step 2: Convert to fraction form
    2,216.80/3,324.25 = 755.29/x
  3. Step 3: Cross multiply
    2,216.80x = 3,324.25 × 755.29
  4. Step 4: Simplify right side
    2,216.80x = 2,510,772.78
  5. Step 5: Solve for x
    x = 2,510,772.78/2,216.80
  6. Step 6: Final answer
    x = 1,132.61

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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.