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Finding the Fourth Proportional to 165.81, 228.67 and 106.73

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Solution

The fourth proportional to 165.81, 228.67 and 106.73 is: 147.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.81 : 228.67 = 106.73 : x
  2. Step 2: Convert to fraction form
    165.81/228.67 = 106.73/x
  3. Step 3: Cross multiply
    165.81x = 228.67 × 106.73
  4. Step 4: Simplify right side
    165.81x = 24,405.95
  5. Step 5: Solve for x
    x = 24,405.95/165.81
  6. Step 6: Final answer
    x = 147.19

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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.