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Finding the Fourth Proportional to 110.57, 165.02 and 109.87

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Solution

The fourth proportional to 110.57, 165.02 and 109.87 is: 163.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.57 : 165.02 = 109.87 : x
  2. Step 2: Convert to fraction form
    110.57/165.02 = 109.87/x
  3. Step 3: Cross multiply
    110.57x = 165.02 × 109.87
  4. Step 4: Simplify right side
    110.57x = 18,129.79
  5. Step 5: Solve for x
    x = 18,129.79/110.57
  6. Step 6: Final answer
    x = 163.97

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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.