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Finding the Fourth Proportional to 233.25, 349.94 and 103.22

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Solution

The fourth proportional to 233.25, 349.94 and 103.22 is: 154.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.25 : 349.94 = 103.22 : x
  2. Step 2: Convert to fraction form
    233.25/349.94 = 103.22/x
  3. Step 3: Cross multiply
    233.25x = 349.94 × 103.22
  4. Step 4: Simplify right side
    233.25x = 36,118.54
  5. Step 5: Solve for x
    x = 36,118.54/233.25
  6. Step 6: Final answer
    x = 154.85

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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.