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Finding the Fourth Proportional to 6.76, 10.12 and 4.38

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Solution

The fourth proportional to 6.76, 10.12 and 4.38 is: 6.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6.76 : 10.12 = 4.38 : x
  2. Step 2: Convert to fraction form
    6.76/10.12 = 4.38/x
  3. Step 3: Cross multiply
    6.76x = 10.12 × 4.38
  4. Step 4: Simplify right side
    6.76x = 44.33
  5. Step 5: Solve for x
    x = 44.33/6.76
  6. Step 6: Final answer
    x = 6.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.