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Finding the Fourth Proportional to 165.87, 228.96 and 106.92

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Solution

The fourth proportional to 165.87, 228.96 and 106.92 is: 147.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.87 : 228.96 = 106.92 : x
  2. Step 2: Convert to fraction form
    165.87/228.96 = 106.92/x
  3. Step 3: Cross multiply
    165.87x = 228.96 × 106.92
  4. Step 4: Simplify right side
    165.87x = 24,480.40
  5. Step 5: Solve for x
    x = 24,480.40/165.87
  6. Step 6: Final answer
    x = 147.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.