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Finding the Fourth Proportional to 609.83, 914.86 and 198.96

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Solution

The fourth proportional to 609.83, 914.86 and 198.96 is: 298.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    609.83 : 914.86 = 198.96 : x
  2. Step 2: Convert to fraction form
    609.83/914.86 = 198.96/x
  3. Step 3: Cross multiply
    609.83x = 914.86 × 198.96
  4. Step 4: Simplify right side
    609.83x = 182,020.55
  5. Step 5: Solve for x
    x = 182,020.55/609.83
  6. Step 6: Final answer
    x = 298.48

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Double scale
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Similar ratio
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1.5x scale

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.