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Finding the Fourth Proportional to 271.04, 374.08 and 221.82

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Solution

The fourth proportional to 271.04, 374.08 and 221.82 is: 306.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.04 : 374.08 = 221.82 : x
  2. Step 2: Convert to fraction form
    271.04/374.08 = 221.82/x
  3. Step 3: Cross multiply
    271.04x = 374.08 × 221.82
  4. Step 4: Simplify right side
    271.04x = 82,978.43
  5. Step 5: Solve for x
    x = 82,978.43/271.04
  6. Step 6: Final answer
    x = 306.15

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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.