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Finding the Fourth Proportional to 609.62, 914.23 and 198.66

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Solution

The fourth proportional to 609.62, 914.23 and 198.66 is: 297.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.62 : 914.23 = 198.66 : x
  2. Step 2: Convert to fraction form
    609.62/914.23 = 198.66/x
  3. Step 3: Cross multiply
    609.62x = 914.23 × 198.66
  4. Step 4: Simplify right side
    609.62x = 181,620.44
  5. Step 5: Solve for x
    x = 181,620.44/609.62
  6. Step 6: Final answer
    x = 297.92

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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.