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Finding the Fourth Proportional to 480.33, 721.91 and 447.53

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Solution

The fourth proportional to 480.33, 721.91 and 447.53 is: 672.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.33 : 721.91 = 447.53 : x
  2. Step 2: Convert to fraction form
    480.33/721.91 = 447.53/x
  3. Step 3: Cross multiply
    480.33x = 721.91 × 447.53
  4. Step 4: Simplify right side
    480.33x = 323,073.89
  5. Step 5: Solve for x
    x = 323,073.89/480.33
  6. Step 6: Final answer
    x = 672.61

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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.