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Finding the Fourth Proportional to 168.21, 230.89 and 149.37

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Solution

The fourth proportional to 168.21, 230.89 and 149.37 is: 205.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.21 : 230.89 = 149.37 : x
  2. Step 2: Convert to fraction form
    168.21/230.89 = 149.37/x
  3. Step 3: Cross multiply
    168.21x = 230.89 × 149.37
  4. Step 4: Simplify right side
    168.21x = 34,487.67
  5. Step 5: Solve for x
    x = 34,487.67/168.21
  6. Step 6: Final answer
    x = 205.03

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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.