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Finding the Third Proportional to 77.16 and 165.26

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Solution

The third proportional to 77.16 and 165.26 is: 353.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    77.16 : 165.26 = 165.26 : x
  2. Step 2: Convert to fraction form
    77.16/165.26 = 165.26/x
  3. Step 3: Cross multiply
    77.16x = 165.26 × 165.26
  4. Step 4: Simplify right side
    77.16x = 27,310.14
  5. Step 5: Solve for x
    x = 27,310.14/77.16
  6. Step 6: Final answer
    x = 353.96

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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.