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Finding the Fourth Proportional to 271.08, 372.56 and 239.81

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Solution

The fourth proportional to 271.08, 372.56 and 239.81 is: 329.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.08 : 372.56 = 239.81 : x
  2. Step 2: Convert to fraction form
    271.08/372.56 = 239.81/x
  3. Step 3: Cross multiply
    271.08x = 372.56 × 239.81
  4. Step 4: Simplify right side
    271.08x = 89,340.55
  5. Step 5: Solve for x
    x = 89,340.55/271.08
  6. Step 6: Final answer
    x = 329.57

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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.