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Finding the Fourth Proportional to 16.72, 22.91 and 16.66

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Solution

The fourth proportional to 16.72, 22.91 and 16.66 is: 22.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    16.72 : 22.91 = 16.66 : x
  2. Step 2: Convert to fraction form
    16.72/22.91 = 16.66/x
  3. Step 3: Cross multiply
    16.72x = 22.91 × 16.66
  4. Step 4: Simplify right side
    16.72x = 381.68
  5. Step 5: Solve for x
    x = 381.68/16.72
  6. Step 6: Final answer
    x = 22.83

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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.