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Finding the Fourth Proportional to 165.29, 228.11 and 106.25

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Solution

The fourth proportional to 165.29, 228.11 and 106.25 is: 146.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.29 : 228.11 = 106.25 : x
  2. Step 2: Convert to fraction form
    165.29/228.11 = 106.25/x
  3. Step 3: Cross multiply
    165.29x = 228.11 × 106.25
  4. Step 4: Simplify right side
    165.29x = 24,235.02
  5. Step 5: Solve for x
    x = 24,235.02/165.29
  6. Step 6: Final answer
    x = 146.63

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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.