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Finding the Third Proportional to 1.23 and 2.54

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Solution

The third proportional to 1.23 and 2.54 is: 5.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1.23 : 2.54 = 2.54 : x
  2. Step 2: Convert to fraction form
    1.23/2.54 = 2.54/x
  3. Step 3: Cross multiply
    1.23x = 2.54 × 2.54
  4. Step 4: Simplify right side
    1.23x = 6.47
  5. Step 5: Solve for x
    x = 6.47/1.23
  6. Step 6: Final answer
    x = 5.28

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.