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Finding the Third Proportional to 0.83 and 0.87

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Solution

The third proportional to 0.83 and 0.87 is: 0.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    0.83 : 0.87 = 0.87 : x
  2. Step 2: Convert to fraction form
    0.83/0.87 = 0.87/x
  3. Step 3: Cross multiply
    0.83x = 0.87 × 0.87
  4. Step 4: Simplify right side
    0.83x = 0.75
  5. Step 5: Solve for x
    x = 0.75/0.83
  6. Step 6: Final answer
    x = 0.91

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Why These Related Problems?

These problems maintain the same ratio (1.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.