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Finding the Fourth Proportional to 167.28, 252.24 and 155.36

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Solution

The fourth proportional to 167.28, 252.24 and 155.36 is: 234.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.28 : 252.24 = 155.36 : x
  2. Step 2: Convert to fraction form
    167.28/252.24 = 155.36/x
  3. Step 3: Cross multiply
    167.28x = 252.24 × 155.36
  4. Step 4: Simplify right side
    167.28x = 39,188.01
  5. Step 5: Solve for x
    x = 39,188.01/167.28
  6. Step 6: Final answer
    x = 234.27

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.