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Finding the Third Proportional to 2.55 and 5.53

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Solution

The third proportional to 2.55 and 5.53 is: 11.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2.55 : 5.53 = 5.53 : x
  2. Step 2: Convert to fraction form
    2.55/5.53 = 5.53/x
  3. Step 3: Cross multiply
    2.55x = 5.53 × 5.53
  4. Step 4: Simplify right side
    2.55x = 30.54
  5. Step 5: Solve for x
    x = 30.54/2.55
  6. Step 6: Final answer
    x = 11.95

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.