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Finding the Fourth Proportional to 441.70, 662.23 and 194.78

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Solution

The fourth proportional to 441.70, 662.23 and 194.78 is: 292.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.70 : 662.23 = 194.78 : x
  2. Step 2: Convert to fraction form
    441.70/662.23 = 194.78/x
  3. Step 3: Cross multiply
    441.70x = 662.23 × 194.78
  4. Step 4: Simplify right side
    441.70x = 128,989.16
  5. Step 5: Solve for x
    x = 128,989.16/441.70
  6. Step 6: Final answer
    x = 292.03

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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.