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Finding the Third Proportional to 149 and 326

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Solution

The third proportional to 149 and 326 is: 713.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    149 : 326 = 326 : x
  2. Step 2: Convert to fraction form
    149/326 = 326/x
  3. Step 3: Cross multiply
    149x = 326 × 326
  4. Step 4: Simplify right side
    149x = 106,276
  5. Step 5: Solve for x
    x = 106,276/149
  6. Step 6: Final answer
    x = 713.26

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.