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Finding the Fourth Proportional to 271.69, 372.63 and 238.88

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Solution

The fourth proportional to 271.69, 372.63 and 238.88 is: 327.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.69 : 372.63 = 238.88 : x
  2. Step 2: Convert to fraction form
    271.69/372.63 = 238.88/x
  3. Step 3: Cross multiply
    271.69x = 372.63 × 238.88
  4. Step 4: Simplify right side
    271.69x = 89,015.68
  5. Step 5: Solve for x
    x = 89,015.68/271.69
  6. Step 6: Final answer
    x = 327.64

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.