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Finding the Fourth Proportional to 233.11, 321.60 and 154.33

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Solution

The fourth proportional to 233.11, 321.60 and 154.33 is: 212.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.11 : 321.60 = 154.33 : x
  2. Step 2: Convert to fraction form
    233.11/321.60 = 154.33/x
  3. Step 3: Cross multiply
    233.11x = 321.60 × 154.33
  4. Step 4: Simplify right side
    233.11x = 49,632.53
  5. Step 5: Solve for x
    x = 49,632.53/233.11
  6. Step 6: Final answer
    x = 212.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.