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Finding the Fourth Proportional to 167.17, 230.81 and 109.05

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Solution

The fourth proportional to 167.17, 230.81 and 109.05 is: 150.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.17 : 230.81 = 109.05 : x
  2. Step 2: Convert to fraction form
    167.17/230.81 = 109.05/x
  3. Step 3: Cross multiply
    167.17x = 230.81 × 109.05
  4. Step 4: Simplify right side
    167.17x = 25,169.83
  5. Step 5: Solve for x
    x = 25,169.83/167.17
  6. Step 6: Final answer
    x = 150.56

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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.