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Finding the Fourth Proportional to 263.97, 393.92 and 236.63

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Solution

The fourth proportional to 263.97, 393.92 and 236.63 is: 353.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.97 : 393.92 = 236.63 : x
  2. Step 2: Convert to fraction form
    263.97/393.92 = 236.63/x
  3. Step 3: Cross multiply
    263.97x = 393.92 × 236.63
  4. Step 4: Simplify right side
    263.97x = 93,210.14
  5. Step 5: Solve for x
    x = 93,210.14/263.97
  6. Step 6: Final answer
    x = 353.11

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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.