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Finding the Fourth Proportional to 441.77, 662.74 and 198.30

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Solution

The fourth proportional to 441.77, 662.74 and 198.30 is: 297.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.77 : 662.74 = 198.30 : x
  2. Step 2: Convert to fraction form
    441.77/662.74 = 198.30/x
  3. Step 3: Cross multiply
    441.77x = 662.74 × 198.30
  4. Step 4: Simplify right side
    441.77x = 131,420.85
  5. Step 5: Solve for x
    x = 131,420.85/441.77
  6. Step 6: Final answer
    x = 297.49

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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.