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Finding the Third Proportional to 6.15 and 13.42

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Solution

The third proportional to 6.15 and 13.42 is: 29.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.15 : 13.42 = 13.42 : x
  2. Step 2: Convert to fraction form
    6.15/13.42 = 13.42/x
  3. Step 3: Cross multiply
    6.15x = 13.42 × 13.42
  4. Step 4: Simplify right side
    6.15x = 180.01
  5. Step 5: Solve for x
    x = 180.01/6.15
  6. Step 6: Final answer
    x = 29.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.