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Finding the Fourth Proportional to 728.94, 1,092.80 and 363.23

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Solution

The fourth proportional to 728.94, 1,092.80 and 363.23 is: 544.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    728.94 : 1,092.80 = 363.23 : x
  2. Step 2: Convert to fraction form
    728.94/1,092.80 = 363.23/x
  3. Step 3: Cross multiply
    728.94x = 1,092.80 × 363.23
  4. Step 4: Simplify right side
    728.94x = 396,932.28
  5. Step 5: Solve for x
    x = 396,932.28/728.94
  6. Step 6: Final answer
    x = 544.53

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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.