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Finding the Third Proportional to 657.38 and 1,418.25

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Solution

The third proportional to 657.38 and 1,418.25 is: 3,059.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.38 : 1,418.25 = 1,418.25 : x
  2. Step 2: Convert to fraction form
    657.38/1,418.25 = 1,418.25/x
  3. Step 3: Cross multiply
    657.38x = 1,418.25 × 1,418.25
  4. Step 4: Simplify right side
    657.38x = 2,011,433.06
  5. Step 5: Solve for x
    x = 2,011,433.06/657.38
  6. Step 6: Final answer
    x = 3,059.80

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.