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Finding the Fourth Proportional to 298.41, 447.27 and 115.70

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Solution

The fourth proportional to 298.41, 447.27 and 115.70 is: 173.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.41 : 447.27 = 115.70 : x
  2. Step 2: Convert to fraction form
    298.41/447.27 = 115.70/x
  3. Step 3: Cross multiply
    298.41x = 447.27 × 115.70
  4. Step 4: Simplify right side
    298.41x = 51,749.14
  5. Step 5: Solve for x
    x = 51,749.14/298.41
  6. Step 6: Final answer
    x = 173.42

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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.