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Finding the Fourth Proportional to 728.24, 1,093.82 and 481.79

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Solution

The fourth proportional to 728.24, 1,093.82 and 481.79 is: 723.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    728.24 : 1,093.82 = 481.79 : x
  2. Step 2: Convert to fraction form
    728.24/1,093.82 = 481.79/x
  3. Step 3: Cross multiply
    728.24x = 1,093.82 × 481.79
  4. Step 4: Simplify right side
    728.24x = 526,983.66
  5. Step 5: Solve for x
    x = 526,983.66/728.24
  6. Step 6: Final answer
    x = 723.65

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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.