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Finding the Third Proportional to 45.12 and 98.13

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Solution

The third proportional to 45.12 and 98.13 is: 213.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.12 : 98.13 = 98.13 : x
  2. Step 2: Convert to fraction form
    45.12/98.13 = 98.13/x
  3. Step 3: Cross multiply
    45.12x = 98.13 × 98.13
  4. Step 4: Simplify right side
    45.12x = 9,630.05
  5. Step 5: Solve for x
    x = 9,630.05/45.12
  6. Step 6: Final answer
    x = 213.45

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.