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Finding the Third Proportional to 108.75 and 248.38

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Solution

The third proportional to 108.75 and 248.38 is: 567.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.75 : 248.38 = 248.38 : x
  2. Step 2: Convert to fraction form
    108.75/248.38 = 248.38/x
  3. Step 3: Cross multiply
    108.75x = 248.38 × 248.38
  4. Step 4: Simplify right side
    108.75x = 61,690.14
  5. Step 5: Solve for x
    x = 61,690.14/108.75
  6. Step 6: Final answer
    x = 567.27

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Why These Related Problems?

These problems maintain the same ratio (2.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.