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Finding the Fourth Proportional to 16.16, 22.12 and 16.11

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Solution

The fourth proportional to 16.16, 22.12 and 16.11 is: 22.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.16 : 22.12 = 16.11 : x
  2. Step 2: Convert to fraction form
    16.16/22.12 = 16.11/x
  3. Step 3: Cross multiply
    16.16x = 22.12 × 16.11
  4. Step 4: Simplify right side
    16.16x = 356.35
  5. Step 5: Solve for x
    x = 356.35/16.16
  6. Step 6: Final answer
    x = 22.05

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.