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Finding the Third Proportional to 2.48 and 5.53

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Solution

The third proportional to 2.48 and 5.53 is: 12.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.48 : 5.53 = 5.53 : x
  2. Step 2: Convert to fraction form
    2.48/5.53 = 5.53/x
  3. Step 3: Cross multiply
    2.48x = 5.53 × 5.53
  4. Step 4: Simplify right side
    2.48x = 30.59
  5. Step 5: Solve for x
    x = 30.59/2.48
  6. Step 6: Final answer
    x = 12.31

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.