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Finding the Third Proportional to 10.98 and 30.20

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Solution

The third proportional to 10.98 and 30.20 is: 83.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10.98 : 30.20 = 30.20 : x
  2. Step 2: Convert to fraction form
    10.98/30.20 = 30.20/x
  3. Step 3: Cross multiply
    10.98x = 30.20 × 30.20
  4. Step 4: Simplify right side
    10.98x = 912.17
  5. Step 5: Solve for x
    x = 912.17/10.98
  6. Step 6: Final answer
    x = 83.06

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Why These Related Problems?

These problems maintain the same ratio (2.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.