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Finding the Fourth Proportional to 394.44, 591.69 and 105.88

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Solution

The fourth proportional to 394.44, 591.69 and 105.88 is: 158.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.44 : 591.69 = 105.88 : x
  2. Step 2: Convert to fraction form
    394.44/591.69 = 105.88/x
  3. Step 3: Cross multiply
    394.44x = 591.69 × 105.88
  4. Step 4: Simplify right side
    394.44x = 62,645.18
  5. Step 5: Solve for x
    x = 62,645.18/394.44
  6. Step 6: Final answer
    x = 158.82

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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.