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Finding the Fourth Proportional to 268.36, 400.02 and 238.93

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Solution

The fourth proportional to 268.36, 400.02 and 238.93 is: 356.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.36 : 400.02 = 238.93 : x
  2. Step 2: Convert to fraction form
    268.36/400.02 = 238.93/x
  3. Step 3: Cross multiply
    268.36x = 400.02 × 238.93
  4. Step 4: Simplify right side
    268.36x = 95,575.78
  5. Step 5: Solve for x
    x = 95,575.78/268.36
  6. Step 6: Final answer
    x = 356.15

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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.