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Finding the Fourth Proportional to 755.83, 1,132.12 and 747.54

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Solution

The fourth proportional to 755.83, 1,132.12 and 747.54 is: 1,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.83 : 1,132.12 = 747.54 : x
  2. Step 2: Convert to fraction form
    755.83/1,132.12 = 747.54/x
  3. Step 3: Cross multiply
    755.83x = 1,132.12 × 747.54
  4. Step 4: Simplify right side
    755.83x = 846,304.98
  5. Step 5: Solve for x
    x = 846,304.98/755.83
  6. Step 6: Final answer
    x = 1,119.70

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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.