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Finding the Third Proportional to 5.29 and 10.87

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Solution

The third proportional to 5.29 and 10.87 is: 22.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5.29 : 10.87 = 10.87 : x
  2. Step 2: Convert to fraction form
    5.29/10.87 = 10.87/x
  3. Step 3: Cross multiply
    5.29x = 10.87 × 10.87
  4. Step 4: Simplify right side
    5.29x = 118.08
  5. Step 5: Solve for x
    x = 118.08/5.29
  6. Step 6: Final answer
    x = 22.30

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.