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Finding the Fourth Proportional to 165.40, 228.28 and 95.46

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Solution

The fourth proportional to 165.40, 228.28 and 95.46 is: 131.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.40 : 228.28 = 95.46 : x
  2. Step 2: Convert to fraction form
    165.40/228.28 = 95.46/x
  3. Step 3: Cross multiply
    165.40x = 228.28 × 95.46
  4. Step 4: Simplify right side
    165.40x = 21,791.61
  5. Step 5: Solve for x
    x = 21,791.61/165.40
  6. Step 6: Final answer
    x = 131.75

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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.