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Finding the Fourth Proportional to 2,233.78, 3,350.97 and 772.74

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Solution

The fourth proportional to 2,233.78, 3,350.97 and 772.74 is: 1,159.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,233.78 : 3,350.97 = 772.74 : x
  2. Step 2: Convert to fraction form
    2,233.78/3,350.97 = 772.74/x
  3. Step 3: Cross multiply
    2,233.78x = 3,350.97 × 772.74
  4. Step 4: Simplify right side
    2,233.78x = 2,589,428.56
  5. Step 5: Solve for x
    x = 2,589,428.56/2,233.78
  6. Step 6: Final answer
    x = 1,159.22

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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.