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Finding the Third Proportional to 11.80 and 23.60

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Solution

The third proportional to 11.80 and 23.60 is: 47.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.80 : 23.60 = 23.60 : x
  2. Step 2: Convert to fraction form
    11.80/23.60 = 23.60/x
  3. Step 3: Cross multiply
    11.80x = 23.60 × 23.60
  4. Step 4: Simplify right side
    11.80x = 557.10
  5. Step 5: Solve for x
    x = 557.10/11.80
  6. Step 6: Final answer
    x = 47.21

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Why These Related Problems?

These problems maintain the same ratio (2.00) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.