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Finding the Third Proportional to 121.36 and 246.09

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Solution

The third proportional to 121.36 and 246.09 is: 499.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121.36 : 246.09 = 246.09 : x
  2. Step 2: Convert to fraction form
    121.36/246.09 = 246.09/x
  3. Step 3: Cross multiply
    121.36x = 246.09 × 246.09
  4. Step 4: Simplify right side
    121.36x = 60,562.13
  5. Step 5: Solve for x
    x = 60,562.13/121.36
  6. Step 6: Final answer
    x = 499.03

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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.