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Finding the Fourth Proportional to 746.69, 1,120.68 and 540.27

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Solution

The fourth proportional to 746.69, 1,120.68 and 540.27 is: 810.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.69 : 1,120.68 = 540.27 : x
  2. Step 2: Convert to fraction form
    746.69/1,120.68 = 540.27/x
  3. Step 3: Cross multiply
    746.69x = 1,120.68 × 540.27
  4. Step 4: Simplify right side
    746.69x = 605,469.78
  5. Step 5: Solve for x
    x = 605,469.78/746.69
  6. Step 6: Final answer
    x = 810.88

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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.