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Finding the Fourth Proportional to 271.22, 404.69 and 254.68

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Solution

The fourth proportional to 271.22, 404.69 and 254.68 is: 380.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.22 : 404.69 = 254.68 : x
  2. Step 2: Convert to fraction form
    271.22/404.69 = 254.68/x
  3. Step 3: Cross multiply
    271.22x = 404.69 × 254.68
  4. Step 4: Simplify right side
    271.22x = 103,066.59
  5. Step 5: Solve for x
    x = 103,066.59/271.22
  6. Step 6: Final answer
    x = 380.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.