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Finding the Fourth Proportional to 11.01, 15.18 and 6.69

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Solution

The fourth proportional to 11.01, 15.18 and 6.69 is: 9.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.01 : 15.18 = 6.69 : x
  2. Step 2: Convert to fraction form
    11.01/15.18 = 6.69/x
  3. Step 3: Cross multiply
    11.01x = 15.18 × 6.69
  4. Step 4: Simplify right side
    11.01x = 101.50
  5. Step 5: Solve for x
    x = 101.50/11.01
  6. Step 6: Final answer
    x = 9.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.