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Finding the Third Proportional to 492 and 1,149

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Solution

The third proportional to 492 and 1,149 is: 2,683.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    492 : 1,149 = 1,149 : x
  2. Step 2: Convert to fraction form
    492/1,149 = 1,149/x
  3. Step 3: Cross multiply
    492x = 1,149 × 1,149
  4. Step 4: Simplify right side
    492x = 1,320,201
  5. Step 5: Solve for x
    x = 1,320,201/492
  6. Step 6: Final answer
    x = 2,683.34

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.