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Finding the Fourth Proportional to 351.18, 484.53 and 220.09

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Solution

The fourth proportional to 351.18, 484.53 and 220.09 is: 303.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.18 : 484.53 = 220.09 : x
  2. Step 2: Convert to fraction form
    351.18/484.53 = 220.09/x
  3. Step 3: Cross multiply
    351.18x = 484.53 × 220.09
  4. Step 4: Simplify right side
    351.18x = 106,640.21
  5. Step 5: Solve for x
    x = 106,640.21/351.18
  6. Step 6: Final answer
    x = 303.66

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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.