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Finding the Fourth Proportional to 231.05, 344.75 and 225.80

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Solution

The fourth proportional to 231.05, 344.75 and 225.80 is: 336.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    231.05 : 344.75 = 225.80 : x
  2. Step 2: Convert to fraction form
    231.05/344.75 = 225.80/x
  3. Step 3: Cross multiply
    231.05x = 344.75 × 225.80
  4. Step 4: Simplify right side
    231.05x = 77,844.68
  5. Step 5: Solve for x
    x = 77,844.68/231.05
  6. Step 6: Final answer
    x = 336.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.