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Finding the Fourth Proportional to 350.80, 484.29 and 219.85

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Solution

The fourth proportional to 350.80, 484.29 and 219.85 is: 303.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.80 : 484.29 = 219.85 : x
  2. Step 2: Convert to fraction form
    350.80/484.29 = 219.85/x
  3. Step 3: Cross multiply
    350.80x = 484.29 × 219.85
  4. Step 4: Simplify right side
    350.80x = 106,467.64
  5. Step 5: Solve for x
    x = 106,467.64/350.80
  6. Step 6: Final answer
    x = 303.50

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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.