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Finding the Third Proportional to 139.50 and 323

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Solution

The third proportional to 139.50 and 323 is: 747.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.50 : 323 = 323 : x
  2. Step 2: Convert to fraction form
    139.50/323 = 323/x
  3. Step 3: Cross multiply
    139.50x = 323 × 323
  4. Step 4: Simplify right side
    139.50x = 104,329
  5. Step 5: Solve for x
    x = 104,329/139.50
  6. Step 6: Final answer
    x = 747.88

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.