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Finding the Fourth Proportional to 167.08, 231.07 and 149.56

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Solution

The fourth proportional to 167.08, 231.07 and 149.56 is: 206.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.08 : 231.07 = 149.56 : x
  2. Step 2: Convert to fraction form
    167.08/231.07 = 149.56/x
  3. Step 3: Cross multiply
    167.08x = 231.07 × 149.56
  4. Step 4: Simplify right side
    167.08x = 34,558.83
  5. Step 5: Solve for x
    x = 34,558.83/167.08
  6. Step 6: Final answer
    x = 206.84

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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.