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Finding the Fourth Proportional to 481.26, 721.56 and 275.92

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Solution

The fourth proportional to 481.26, 721.56 and 275.92 is: 413.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.26 : 721.56 = 275.92 : x
  2. Step 2: Convert to fraction form
    481.26/721.56 = 275.92/x
  3. Step 3: Cross multiply
    481.26x = 721.56 × 275.92
  4. Step 4: Simplify right side
    481.26x = 199,092.84
  5. Step 5: Solve for x
    x = 199,092.84/481.26
  6. Step 6: Final answer
    x = 413.69

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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.