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Finding the Fourth Proportional to 718.20, 1,073.97 and 544.91

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Solution

The fourth proportional to 718.20, 1,073.97 and 544.91 is: 814.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.20 : 1,073.97 = 544.91 : x
  2. Step 2: Convert to fraction form
    718.20/1,073.97 = 544.91/x
  3. Step 3: Cross multiply
    718.20x = 1,073.97 × 544.91
  4. Step 4: Simplify right side
    718.20x = 585,211.62
  5. Step 5: Solve for x
    x = 585,211.62/718.20
  6. Step 6: Final answer
    x = 814.83

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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.