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Finding the Fourth Proportional to 298.82, 448.47 and 196.09

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Solution

The fourth proportional to 298.82, 448.47 and 196.09 is: 294.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.82 : 448.47 = 196.09 : x
  2. Step 2: Convert to fraction form
    298.82/448.47 = 196.09/x
  3. Step 3: Cross multiply
    298.82x = 448.47 × 196.09
  4. Step 4: Simplify right side
    298.82x = 87,939.36
  5. Step 5: Solve for x
    x = 87,939.36/298.82
  6. Step 6: Final answer
    x = 294.29

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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.