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Finding the Fourth Proportional to 167.12, 251.06 and 147.26

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Solution

The fourth proportional to 167.12, 251.06 and 147.26 is: 221.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.12 : 251.06 = 147.26 : x
  2. Step 2: Convert to fraction form
    167.12/251.06 = 147.26/x
  3. Step 3: Cross multiply
    167.12x = 251.06 × 147.26
  4. Step 4: Simplify right side
    167.12x = 36,970.21
  5. Step 5: Solve for x
    x = 36,970.21/167.12
  6. Step 6: Final answer
    x = 221.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.