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Finding the Fourth Proportional to 729.75, 1,093.23 and 574.86

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Solution

The fourth proportional to 729.75, 1,093.23 and 574.86 is: 861.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    729.75 : 1,093.23 = 574.86 : x
  2. Step 2: Convert to fraction form
    729.75/1,093.23 = 574.86/x
  3. Step 3: Cross multiply
    729.75x = 1,093.23 × 574.86
  4. Step 4: Simplify right side
    729.75x = 628,454.20
  5. Step 5: Solve for x
    x = 628,454.20/729.75
  6. Step 6: Final answer
    x = 861.19

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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.