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Finding the Third Proportional to 681 and 1,554.75

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Solution

The third proportional to 681 and 1,554.75 is: 3,549.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    681 : 1,554.75 = 1,554.75 : x
  2. Step 2: Convert to fraction form
    681/1,554.75 = 1,554.75/x
  3. Step 3: Cross multiply
    681x = 1,554.75 × 1,554.75
  4. Step 4: Simplify right side
    681x = 2,417,247.56
  5. Step 5: Solve for x
    x = 2,417,247.56/681
  6. Step 6: Final answer
    x = 3,549.56

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Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.