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Finding the Fourth Proportional to 350.96, 484.34 and 220

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Solution

The fourth proportional to 350.96, 484.34 and 220 is: 303.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.96 : 484.34 = 220 : x
  2. Step 2: Convert to fraction form
    350.96/484.34 = 220/x
  3. Step 3: Cross multiply
    350.96x = 484.34 × 220
  4. Step 4: Simplify right side
    350.96x = 106,554.80
  5. Step 5: Solve for x
    x = 106,554.80/350.96
  6. Step 6: Final answer
    x = 303.61

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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.