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Finding the Third Proportional to 415.69 and 879.44

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Solution

The third proportional to 415.69 and 879.44 is: 1,860.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.69 : 879.44 = 879.44 : x
  2. Step 2: Convert to fraction form
    415.69/879.44 = 879.44/x
  3. Step 3: Cross multiply
    415.69x = 879.44 × 879.44
  4. Step 4: Simplify right side
    415.69x = 773,410.32
  5. Step 5: Solve for x
    x = 773,410.32/415.69
  6. Step 6: Final answer
    x = 1,860.56

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.