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Finding the Fourth Proportional to 231.93, 349.85 and 224.64

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Solution

The fourth proportional to 231.93, 349.85 and 224.64 is: 338.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.93 : 349.85 = 224.64 : x
  2. Step 2: Convert to fraction form
    231.93/349.85 = 224.64/x
  3. Step 3: Cross multiply
    231.93x = 349.85 × 224.64
  4. Step 4: Simplify right side
    231.93x = 78,590.87
  5. Step 5: Solve for x
    x = 78,590.87/231.93
  6. Step 6: Final answer
    x = 338.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.