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Finding the Fourth Proportional to 193.44, 289.81 and 112.11

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Solution

The fourth proportional to 193.44, 289.81 and 112.11 is: 167.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.44 : 289.81 = 112.11 : x
  2. Step 2: Convert to fraction form
    193.44/289.81 = 112.11/x
  3. Step 3: Cross multiply
    193.44x = 289.81 × 112.11
  4. Step 4: Simplify right side
    193.44x = 32,490.60
  5. Step 5: Solve for x
    x = 32,490.60/193.44
  6. Step 6: Final answer
    x = 167.96

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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.