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Finding the Fourth Proportional to 263.71, 393.26 and 249.33

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Solution

The fourth proportional to 263.71, 393.26 and 249.33 is: 371.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.71 : 393.26 = 249.33 : x
  2. Step 2: Convert to fraction form
    263.71/393.26 = 249.33/x
  3. Step 3: Cross multiply
    263.71x = 393.26 × 249.33
  4. Step 4: Simplify right side
    263.71x = 98,051.52
  5. Step 5: Solve for x
    x = 98,051.52/263.71
  6. Step 6: Final answer
    x = 371.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.