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Finding the Third Proportional to 165.80 and 361.97

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Solution

The third proportional to 165.80 and 361.97 is: 790.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.80 : 361.97 = 361.97 : x
  2. Step 2: Convert to fraction form
    165.80/361.97 = 361.97/x
  3. Step 3: Cross multiply
    165.80x = 361.97 × 361.97
  4. Step 4: Simplify right side
    165.80x = 131,021.38
  5. Step 5: Solve for x
    x = 131,021.38/165.80
  6. Step 6: Final answer
    x = 790.25

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.