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Finding the Fourth Proportional to 112.94, 169.60 and 94.84

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Solution

The fourth proportional to 112.94, 169.60 and 94.84 is: 142.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.94 : 169.60 = 94.84 : x
  2. Step 2: Convert to fraction form
    112.94/169.60 = 94.84/x
  3. Step 3: Cross multiply
    112.94x = 169.60 × 94.84
  4. Step 4: Simplify right side
    112.94x = 16,084.86
  5. Step 5: Solve for x
    x = 16,084.86/112.94
  6. Step 6: Final answer
    x = 142.42

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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.