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Finding the Fourth Proportional to 298.83, 447.69 and 154.38

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Solution

The fourth proportional to 298.83, 447.69 and 154.38 is: 231.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.83 : 447.69 = 154.38 : x
  2. Step 2: Convert to fraction form
    298.83/447.69 = 154.38/x
  3. Step 3: Cross multiply
    298.83x = 447.69 × 154.38
  4. Step 4: Simplify right side
    298.83x = 69,114.38
  5. Step 5: Solve for x
    x = 69,114.38/298.83
  6. Step 6: Final answer
    x = 231.28

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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.