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Finding the Third Proportional to 67 and 96.50

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Solution

The third proportional to 67 and 96.50 is: 138.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    67 : 96.50 = 96.50 : x
  2. Step 2: Convert to fraction form
    67/96.50 = 96.50/x
  3. Step 3: Cross multiply
    67x = 96.50 × 96.50
  4. Step 4: Simplify right side
    67x = 9,312.25
  5. Step 5: Solve for x
    x = 9,312.25/67
  6. Step 6: Final answer
    x = 138.99

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.