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Finding the Fourth Proportional to 11.28, 16.82 and 11.27

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Solution

The fourth proportional to 11.28, 16.82 and 11.27 is: 16.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11.28 : 16.82 = 11.27 : x
  2. Step 2: Convert to fraction form
    11.28/16.82 = 11.27/x
  3. Step 3: Cross multiply
    11.28x = 16.82 × 11.27
  4. Step 4: Simplify right side
    11.28x = 189.46
  5. Step 5: Solve for x
    x = 189.46/11.28
  6. Step 6: Final answer
    x = 16.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.