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Finding the Fourth Proportional to 337.71, 505.82 and 220.75

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Solution

The fourth proportional to 337.71, 505.82 and 220.75 is: 330.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    337.71 : 505.82 = 220.75 : x
  2. Step 2: Convert to fraction form
    337.71/505.82 = 220.75/x
  3. Step 3: Cross multiply
    337.71x = 505.82 × 220.75
  4. Step 4: Simplify right side
    337.71x = 111,660.95
  5. Step 5: Solve for x
    x = 111,660.95/337.71
  6. Step 6: Final answer
    x = 330.64

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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.