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Finding the Third Proportional to 453.66 and 679.92

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Solution

The third proportional to 453.66 and 679.92 is: 1,019.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.66 : 679.92 = 679.92 : x
  2. Step 2: Convert to fraction form
    453.66/679.92 = 679.92/x
  3. Step 3: Cross multiply
    453.66x = 679.92 × 679.92
  4. Step 4: Simplify right side
    453.66x = 462,293.76
  5. Step 5: Solve for x
    x = 462,293.76/453.66
  6. Step 6: Final answer
    x = 1,019.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.