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Finding the Third Proportional to 457.75 and 676.56

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Solution

The third proportional to 457.75 and 676.56 is: 999.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.75 : 676.56 = 676.56 : x
  2. Step 2: Convert to fraction form
    457.75/676.56 = 676.56/x
  3. Step 3: Cross multiply
    457.75x = 676.56 × 676.56
  4. Step 4: Simplify right side
    457.75x = 457,736.82
  5. Step 5: Solve for x
    x = 457,736.82/457.75
  6. Step 6: Final answer
    x = 999.97

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.