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Finding the Third Proportional to 408.88 and 886.13

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Solution

The third proportional to 408.88 and 886.13 is: 1,920.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.88 : 886.13 = 886.13 : x
  2. Step 2: Convert to fraction form
    408.88/886.13 = 886.13/x
  3. Step 3: Cross multiply
    408.88x = 886.13 × 886.13
  4. Step 4: Simplify right side
    408.88x = 785,217.52
  5. Step 5: Solve for x
    x = 785,217.52/408.88
  6. Step 6: Final answer
    x = 1,920.43

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.