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Finding the Fourth Proportional to 721.73, 995.46 and 459.83

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Solution

The fourth proportional to 721.73, 995.46 and 459.83 is: 634.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    721.73 : 995.46 = 459.83 : x
  2. Step 2: Convert to fraction form
    721.73/995.46 = 459.83/x
  3. Step 3: Cross multiply
    721.73x = 995.46 × 459.83
  4. Step 4: Simplify right side
    721.73x = 457,743.14
  5. Step 5: Solve for x
    x = 457,743.14/721.73
  6. Step 6: Final answer
    x = 634.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.