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Finding the Fourth Proportional to 373.21, 559.20 and 219.27

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Solution

The fourth proportional to 373.21, 559.20 and 219.27 is: 328.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.21 : 559.20 = 219.27 : x
  2. Step 2: Convert to fraction form
    373.21/559.20 = 219.27/x
  3. Step 3: Cross multiply
    373.21x = 559.20 × 219.27
  4. Step 4: Simplify right side
    373.21x = 122,618.70
  5. Step 5: Solve for x
    x = 122,618.70/373.21
  6. Step 6: Final answer
    x = 328.55

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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.