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Finding the Third Proportional to 415.88 and 871.75

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Solution

The third proportional to 415.88 and 871.75 is: 1,827.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.88 : 871.75 = 871.75 : x
  2. Step 2: Convert to fraction form
    415.88/871.75 = 871.75/x
  3. Step 3: Cross multiply
    415.88x = 871.75 × 871.75
  4. Step 4: Simplify right side
    415.88x = 759,948.06
  5. Step 5: Solve for x
    x = 759,948.06/415.88
  6. Step 6: Final answer
    x = 1,827.35

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.