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Finding the Fourth Proportional to 729.03, 1,092.84 and 454.53

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Solution

The fourth proportional to 729.03, 1,092.84 and 454.53 is: 681.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    729.03 : 1,092.84 = 454.53 : x
  2. Step 2: Convert to fraction form
    729.03/1,092.84 = 454.53/x
  3. Step 3: Cross multiply
    729.03x = 1,092.84 × 454.53
  4. Step 4: Simplify right side
    729.03x = 496,728.57
  5. Step 5: Solve for x
    x = 496,728.57/729.03
  6. Step 6: Final answer
    x = 681.36

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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.