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Finding the Fourth Proportional to 235.44, 350.91 and 222.21

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Solution

The fourth proportional to 235.44, 350.91 and 222.21 is: 331.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.44 : 350.91 = 222.21 : x
  2. Step 2: Convert to fraction form
    235.44/350.91 = 222.21/x
  3. Step 3: Cross multiply
    235.44x = 350.91 × 222.21
  4. Step 4: Simplify right side
    235.44x = 77,975.71
  5. Step 5: Solve for x
    x = 77,975.71/235.44
  6. Step 6: Final answer
    x = 331.19

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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.