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Finding the Fourth Proportional to 233.11, 349.60 and 68.53

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Solution

The fourth proportional to 233.11, 349.60 and 68.53 is: 102.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.11 : 349.60 = 68.53 : x
  2. Step 2: Convert to fraction form
    233.11/349.60 = 68.53/x
  3. Step 3: Cross multiply
    233.11x = 349.60 × 68.53
  4. Step 4: Simplify right side
    233.11x = 23,958.09
  5. Step 5: Solve for x
    x = 23,958.09/233.11
  6. Step 6: Final answer
    x = 102.78

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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.