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Finding the Fourth Proportional to 167.85, 231.53 and 118.05

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Solution

The fourth proportional to 167.85, 231.53 and 118.05 is: 162.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.85 : 231.53 = 118.05 : x
  2. Step 2: Convert to fraction form
    167.85/231.53 = 118.05/x
  3. Step 3: Cross multiply
    167.85x = 231.53 × 118.05
  4. Step 4: Simplify right side
    167.85x = 27,331.53
  5. Step 5: Solve for x
    x = 27,331.53/167.85
  6. Step 6: Final answer
    x = 162.83

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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.