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Finding the Third Proportional to 46.38 and 81.50

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Solution

The third proportional to 46.38 and 81.50 is: 143.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    46.38 : 81.50 = 81.50 : x
  2. Step 2: Convert to fraction form
    46.38/81.50 = 81.50/x
  3. Step 3: Cross multiply
    46.38x = 81.50 × 81.50
  4. Step 4: Simplify right side
    46.38x = 6,642.25
  5. Step 5: Solve for x
    x = 6,642.25/46.38
  6. Step 6: Final answer
    x = 143.23

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Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.