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Finding the Fourth Proportional to 263.39, 394.26 and 191.30

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Solution

The fourth proportional to 263.39, 394.26 and 191.30 is: 286.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.39 : 394.26 = 191.30 : x
  2. Step 2: Convert to fraction form
    263.39/394.26 = 191.30/x
  3. Step 3: Cross multiply
    263.39x = 394.26 × 191.30
  4. Step 4: Simplify right side
    263.39x = 75,419.97
  5. Step 5: Solve for x
    x = 75,419.97/263.39
  6. Step 6: Final answer
    x = 286.35

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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.