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Finding the Fourth Proportional to 233.33, 321.26 and 196.40

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Solution

The fourth proportional to 233.33, 321.26 and 196.40 is: 270.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    233.33 : 321.26 = 196.40 : x
  2. Step 2: Convert to fraction form
    233.33/321.26 = 196.40/x
  3. Step 3: Cross multiply
    233.33x = 321.26 × 196.40
  4. Step 4: Simplify right side
    233.33x = 63,095.29
  5. Step 5: Solve for x
    x = 63,095.29/233.33
  6. Step 6: Final answer
    x = 270.42

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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.