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Finding the Fourth Proportional to 268.38, 369.36 and 235.58

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Solution

The fourth proportional to 268.38, 369.36 and 235.58 is: 324.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.38 : 369.36 = 235.58 : x
  2. Step 2: Convert to fraction form
    268.38/369.36 = 235.58/x
  3. Step 3: Cross multiply
    268.38x = 369.36 × 235.58
  4. Step 4: Simplify right side
    268.38x = 87,011.98
  5. Step 5: Solve for x
    x = 87,011.98/268.38
  6. Step 6: Final answer
    x = 324.21

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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.