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Finding the Fourth Proportional to 2,232.87, 3,349.30 and 771.22

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Solution

The fourth proportional to 2,232.87, 3,349.30 and 771.22 is: 1,156.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,232.87 : 3,349.30 = 771.22 : x
  2. Step 2: Convert to fraction form
    2,232.87/3,349.30 = 771.22/x
  3. Step 3: Cross multiply
    2,232.87x = 3,349.30 × 771.22
  4. Step 4: Simplify right side
    2,232.87x = 2,583,047.15
  5. Step 5: Solve for x
    x = 2,583,047.15/2,232.87
  6. Step 6: Final answer
    x = 1,156.83

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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.