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Finding the Third Proportional to 149 and 329

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Solution

The third proportional to 149 and 329 is: 726.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149 : 329 = 329 : x
  2. Step 2: Convert to fraction form
    149/329 = 329/x
  3. Step 3: Cross multiply
    149x = 329 × 329
  4. Step 4: Simplify right side
    149x = 108,241
  5. Step 5: Solve for x
    x = 108,241/149
  6. Step 6: Final answer
    x = 726.45

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.