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Finding the Third Proportional to 454.11 and 681.17

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Solution

The third proportional to 454.11 and 681.17 is: 1,021.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.11 : 681.17 = 681.17 : x
  2. Step 2: Convert to fraction form
    454.11/681.17 = 681.17/x
  3. Step 3: Cross multiply
    454.11x = 681.17 × 681.17
  4. Step 4: Simplify right side
    454.11x = 463,990.22
  5. Step 5: Solve for x
    x = 463,990.22/454.11
  6. Step 6: Final answer
    x = 1,021.75

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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.