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Finding the Fourth Proportional to 880.82, 1,321.68 and 447.97

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Solution

The fourth proportional to 880.82, 1,321.68 and 447.97 is: 672.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    880.82 : 1,321.68 = 447.97 : x
  2. Step 2: Convert to fraction form
    880.82/1,321.68 = 447.97/x
  3. Step 3: Cross multiply
    880.82x = 1,321.68 × 447.97
  4. Step 4: Simplify right side
    880.82x = 592,070.75
  5. Step 5: Solve for x
    x = 592,070.75/880.82
  6. Step 6: Final answer
    x = 672.19

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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.