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Finding the Third Proportional to 63.28 and 98.30

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Solution

The third proportional to 63.28 and 98.30 is: 152.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    63.28 : 98.30 = 98.30 : x
  2. Step 2: Convert to fraction form
    63.28/98.30 = 98.30/x
  3. Step 3: Cross multiply
    63.28x = 98.30 × 98.30
  4. Step 4: Simplify right side
    63.28x = 9,662.28
  5. Step 5: Solve for x
    x = 9,662.28/63.28
  6. Step 6: Final answer
    x = 152.69

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.