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Finding the Fourth Proportional to 376.25, 519.17 and 221.00

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Solution

The fourth proportional to 376.25, 519.17 and 221.00 is: 304.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.25 : 519.17 = 221.00 : x
  2. Step 2: Convert to fraction form
    376.25/519.17 = 221.00/x
  3. Step 3: Cross multiply
    376.25x = 519.17 × 221.00
  4. Step 4: Simplify right side
    376.25x = 114,732.87
  5. Step 5: Solve for x
    x = 114,732.87/376.25
  6. Step 6: Final answer
    x = 304.94

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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.