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Finding the Third Proportional to 324.38 and 492.56

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Solution

The third proportional to 324.38 and 492.56 is: 747.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.38 : 492.56 = 492.56 : x
  2. Step 2: Convert to fraction form
    324.38/492.56 = 492.56/x
  3. Step 3: Cross multiply
    324.38x = 492.56 × 492.56
  4. Step 4: Simplify right side
    324.38x = 242,617.82
  5. Step 5: Solve for x
    x = 242,617.82/324.38
  6. Step 6: Final answer
    x = 747.95

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.