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Finding the Third Proportional to 1.81 and 2.69

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Solution

The third proportional to 1.81 and 2.69 is: 3.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1.81 : 2.69 = 2.69 : x
  2. Step 2: Convert to fraction form
    1.81/2.69 = 2.69/x
  3. Step 3: Cross multiply
    1.81x = 2.69 × 2.69
  4. Step 4: Simplify right side
    1.81x = 7.22
  5. Step 5: Solve for x
    x = 7.22/1.81
  6. Step 6: Final answer
    x = 3.98

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.