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Finding the Fourth Proportional to 256.44, 383.94 and 238.44

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Solution

The fourth proportional to 256.44, 383.94 and 238.44 is: 356.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.44 : 383.94 = 238.44 : x
  2. Step 2: Convert to fraction form
    256.44/383.94 = 238.44/x
  3. Step 3: Cross multiply
    256.44x = 383.94 × 238.44
  4. Step 4: Simplify right side
    256.44x = 91,546.65
  5. Step 5: Solve for x
    x = 91,546.65/256.44
  6. Step 6: Final answer
    x = 356.99

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.