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Finding the Fourth Proportional to 110.52, 164.79 and 109.80

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Solution

The fourth proportional to 110.52, 164.79 and 109.80 is: 163.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.52 : 164.79 = 109.80 : x
  2. Step 2: Convert to fraction form
    110.52/164.79 = 109.80/x
  3. Step 3: Cross multiply
    110.52x = 164.79 × 109.80
  4. Step 4: Simplify right side
    110.52x = 18,093.94
  5. Step 5: Solve for x
    x = 18,093.94/110.52
  6. Step 6: Final answer
    x = 163.72

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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.