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Finding the Third Proportional to 667.69 and 1,353.09

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Solution

The third proportional to 667.69 and 1,353.09 is: 2,742.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.69 : 1,353.09 = 1,353.09 : x
  2. Step 2: Convert to fraction form
    667.69/1,353.09 = 1,353.09/x
  3. Step 3: Cross multiply
    667.69x = 1,353.09 × 1,353.09
  4. Step 4: Simplify right side
    667.69x = 1,830,862.70
  5. Step 5: Solve for x
    x = 1,830,862.70/667.69
  6. Step 6: Final answer
    x = 2,742.10

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.