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Finding the Fourth Proportional to 268.42, 369.56 and 233.90

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Solution

The fourth proportional to 268.42, 369.56 and 233.90 is: 322.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.42 : 369.56 = 233.90 : x
  2. Step 2: Convert to fraction form
    268.42/369.56 = 233.90/x
  3. Step 3: Cross multiply
    268.42x = 369.56 × 233.90
  4. Step 4: Simplify right side
    268.42x = 86,438.91
  5. Step 5: Solve for x
    x = 86,438.91/268.42
  6. Step 6: Final answer
    x = 322.03

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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.