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Finding the Third Proportional to 1.49 and 3.31

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Solution

The third proportional to 1.49 and 3.31 is: 7.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1.49 : 3.31 = 3.31 : x
  2. Step 2: Convert to fraction form
    1.49/3.31 = 3.31/x
  3. Step 3: Cross multiply
    1.49x = 3.31 × 3.31
  4. Step 4: Simplify right side
    1.49x = 10.99
  5. Step 5: Solve for x
    x = 10.99/1.49
  6. Step 6: Final answer
    x = 7.37

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.