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Finding the Fourth Proportional to 7.11, 10.67 and 6.95

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Solution

The fourth proportional to 7.11, 10.67 and 6.95 is: 10.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7.11 : 10.67 = 6.95 : x
  2. Step 2: Convert to fraction form
    7.11/10.67 = 6.95/x
  3. Step 3: Cross multiply
    7.11x = 10.67 × 6.95
  4. Step 4: Simplify right side
    7.11x = 74.15
  5. Step 5: Solve for x
    x = 74.15/7.11
  6. Step 6: Final answer
    x = 10.43

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