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Finding the Fourth Proportional to 298.05, 446.88 and 115.36

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Solution

The fourth proportional to 298.05, 446.88 and 115.36 is: 172.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.05 : 446.88 = 115.36 : x
  2. Step 2: Convert to fraction form
    298.05/446.88 = 115.36/x
  3. Step 3: Cross multiply
    298.05x = 446.88 × 115.36
  4. Step 4: Simplify right side
    298.05x = 51,552.08
  5. Step 5: Solve for x
    x = 51,552.08/298.05
  6. Step 6: Final answer
    x = 172.96

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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.