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Finding the Third Proportional to 1.87 and 5.05

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Solution

The third proportional to 1.87 and 5.05 is: 13.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1.87 : 5.05 = 5.05 : x
  2. Step 2: Convert to fraction form
    1.87/5.05 = 5.05/x
  3. Step 3: Cross multiply
    1.87x = 5.05 × 5.05
  4. Step 4: Simplify right side
    1.87x = 25.52
  5. Step 5: Solve for x
    x = 25.52/1.87
  6. Step 6: Final answer
    x = 13.63

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.