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Finding the Third Proportional to 67 and 162.50

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Solution

The third proportional to 67 and 162.50 is: 394.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    67 : 162.50 = 162.50 : x
  2. Step 2: Convert to fraction form
    67/162.50 = 162.50/x
  3. Step 3: Cross multiply
    67x = 162.50 × 162.50
  4. Step 4: Simplify right side
    67x = 26,406.25
  5. Step 5: Solve for x
    x = 26,406.25/67
  6. Step 6: Final answer
    x = 394.12

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Why These Related Problems?

These problems maintain the same ratio (2.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.