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Finding the Fourth Proportional to 271.08, 406.28 and 194.20

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Solution

The fourth proportional to 271.08, 406.28 and 194.20 is: 291.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.08 : 406.28 = 194.20 : x
  2. Step 2: Convert to fraction form
    271.08/406.28 = 194.20/x
  3. Step 3: Cross multiply
    271.08x = 406.28 × 194.20
  4. Step 4: Simplify right side
    271.08x = 78,899.05
  5. Step 5: Solve for x
    x = 78,899.05/271.08
  6. Step 6: Final answer
    x = 291.05

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Why These Related Problems?

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