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Finding the Fourth Proportional to 271.98, 407.57 and 248.22

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Solution

The fourth proportional to 271.98, 407.57 and 248.22 is: 371.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    271.98 : 407.57 = 248.22 : x
  2. Step 2: Convert to fraction form
    271.98/407.57 = 248.22/x
  3. Step 3: Cross multiply
    271.98x = 407.57 × 248.22
  4. Step 4: Simplify right side
    271.98x = 101,165.78
  5. Step 5: Solve for x
    x = 101,165.78/271.98
  6. Step 6: Final answer
    x = 371.96

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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.