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Finding the Third Proportional to 6.79 and 15.60

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Solution

The third proportional to 6.79 and 15.60 is: 35.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.79 : 15.60 = 15.60 : x
  2. Step 2: Convert to fraction form
    6.79/15.60 = 15.60/x
  3. Step 3: Cross multiply
    6.79x = 15.60 × 15.60
  4. Step 4: Simplify right side
    6.79x = 243.51
  5. Step 5: Solve for x
    x = 243.51/6.79
  6. Step 6: Final answer
    x = 35.86

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.