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Finding the Third Proportional to 136.69 and 297.11

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Solution

The third proportional to 136.69 and 297.11 is: 645.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.69 : 297.11 = 297.11 : x
  2. Step 2: Convert to fraction form
    136.69/297.11 = 297.11/x
  3. Step 3: Cross multiply
    136.69x = 297.11 × 297.11
  4. Step 4: Simplify right side
    136.69x = 88,271.66
  5. Step 5: Solve for x
    x = 88,271.66/136.69
  6. Step 6: Final answer
    x = 645.79

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.