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Finding the Third Proportional to 168.66 and 361.69

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Solution

The third proportional to 168.66 and 361.69 is: 775.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.66 : 361.69 = 361.69 : x
  2. Step 2: Convert to fraction form
    168.66/361.69 = 361.69/x
  3. Step 3: Cross multiply
    168.66x = 361.69 × 361.69
  4. Step 4: Simplify right side
    168.66x = 130,817.85
  5. Step 5: Solve for x
    x = 130,817.85/168.66
  6. Step 6: Final answer
    x = 775.65

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.