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Finding the Third Proportional to 1.81 and 3.07

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Solution

The third proportional to 1.81 and 3.07 is: 5.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1.81 : 3.07 = 3.07 : x
  2. Step 2: Convert to fraction form
    1.81/3.07 = 3.07/x
  3. Step 3: Cross multiply
    1.81x = 3.07 × 3.07
  4. Step 4: Simplify right side
    1.81x = 9.45
  5. Step 5: Solve for x
    x = 9.45/1.81
  6. Step 6: Final answer
    x = 5.22

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Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.