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Finding the Fourth Proportional to 260.95, 393.38 and 243.33

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Solution

The fourth proportional to 260.95, 393.38 and 243.33 is: 366.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    260.95 : 393.38 = 243.33 : x
  2. Step 2: Convert to fraction form
    260.95/393.38 = 243.33/x
  3. Step 3: Cross multiply
    260.95x = 393.38 × 243.33
  4. Step 4: Simplify right side
    260.95x = 95,721.16
  5. Step 5: Solve for x
    x = 95,721.16/260.95
  6. Step 6: Final answer
    x = 366.83

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.