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Finding the Third Proportional to 2.48 and 5.40

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Solution

The third proportional to 2.48 and 5.40 is: 11.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.48 : 5.40 = 5.40 : x
  2. Step 2: Convert to fraction form
    2.48/5.40 = 5.40/x
  3. Step 3: Cross multiply
    2.48x = 5.40 × 5.40
  4. Step 4: Simplify right side
    2.48x = 29.21
  5. Step 5: Solve for x
    x = 29.21/2.48
  6. Step 6: Final answer
    x = 11.78

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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.