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Finding the Fourth Proportional to 271.94, 375.28 and 161.43

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Solution

The fourth proportional to 271.94, 375.28 and 161.43 is: 222.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.94 : 375.28 = 161.43 : x
  2. Step 2: Convert to fraction form
    271.94/375.28 = 161.43/x
  3. Step 3: Cross multiply
    271.94x = 375.28 × 161.43
  4. Step 4: Simplify right side
    271.94x = 60,579.57
  5. Step 5: Solve for x
    x = 60,579.57/271.94
  6. Step 6: Final answer
    x = 222.77

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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.