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Finding the Fourth Proportional to 166.32, 228.56 and 155.52

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Solution

The fourth proportional to 166.32, 228.56 and 155.52 is: 213.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.32 : 228.56 = 155.52 : x
  2. Step 2: Convert to fraction form
    166.32/228.56 = 155.52/x
  3. Step 3: Cross multiply
    166.32x = 228.56 × 155.52
  4. Step 4: Simplify right side
    166.32x = 35,544.87
  5. Step 5: Solve for x
    x = 35,544.87/166.32
  6. Step 6: Final answer
    x = 213.71

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.