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Finding the Third Proportional to 136.69 and 269.58

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Solution

The third proportional to 136.69 and 269.58 is: 531.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.69 : 269.58 = 269.58 : x
  2. Step 2: Convert to fraction form
    136.69/269.58 = 269.58/x
  3. Step 3: Cross multiply
    136.69x = 269.58 × 269.58
  4. Step 4: Simplify right side
    136.69x = 72,672.37
  5. Step 5: Solve for x
    x = 72,672.37/136.69
  6. Step 6: Final answer
    x = 531.67

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.