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Finding the Fourth Proportional to 271.80, 374.76 and 201.87

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Solution

The fourth proportional to 271.80, 374.76 and 201.87 is: 278.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.80 : 374.76 = 201.87 : x
  2. Step 2: Convert to fraction form
    271.80/374.76 = 201.87/x
  3. Step 3: Cross multiply
    271.80x = 374.76 × 201.87
  4. Step 4: Simplify right side
    271.80x = 75,652.80
  5. Step 5: Solve for x
    x = 75,652.80/271.80
  6. Step 6: Final answer
    x = 278.34

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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.