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Finding the Third Proportional to 0.87 and 2.05

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Solution

The third proportional to 0.87 and 2.05 is: 4.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    0.87 : 2.05 = 2.05 : x
  2. Step 2: Convert to fraction form
    0.87/2.05 = 2.05/x
  3. Step 3: Cross multiply
    0.87x = 2.05 × 2.05
  4. Step 4: Simplify right side
    0.87x = 4.20
  5. Step 5: Solve for x
    x = 4.20/0.87
  6. Step 6: Final answer
    x = 4.83

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.