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Finding the Third Proportional to 457.88 and 666.56

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Solution

The third proportional to 457.88 and 666.56 is: 970.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.88 : 666.56 = 666.56 : x
  2. Step 2: Convert to fraction form
    457.88/666.56 = 666.56/x
  3. Step 3: Cross multiply
    457.88x = 666.56 × 666.56
  4. Step 4: Simplify right side
    457.88x = 444,305.57
  5. Step 5: Solve for x
    x = 444,305.57/457.88
  6. Step 6: Final answer
    x = 970.36

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.