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Finding the Fourth Proportional to 111.00, 166.53 and 109.27

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Solution

The fourth proportional to 111.00, 166.53 and 109.27 is: 163.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.00 : 166.53 = 109.27 : x
  2. Step 2: Convert to fraction form
    111.00/166.53 = 109.27/x
  3. Step 3: Cross multiply
    111.00x = 166.53 × 109.27
  4. Step 4: Simplify right side
    111.00x = 18,197.51
  5. Step 5: Solve for x
    x = 18,197.51/111.00
  6. Step 6: Final answer
    x = 163.95

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Why These Related Problems?

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