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Finding the Fourth Proportional to 298.44, 446.40 and 225.72

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Solution

The fourth proportional to 298.44, 446.40 and 225.72 is: 337.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.44 : 446.40 = 225.72 : x
  2. Step 2: Convert to fraction form
    298.44/446.40 = 225.72/x
  3. Step 3: Cross multiply
    298.44x = 446.40 × 225.72
  4. Step 4: Simplify right side
    298.44x = 100,761.41
  5. Step 5: Solve for x
    x = 100,761.41/298.44
  6. Step 6: Final answer
    x = 337.63

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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.