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Finding the Fourth Proportional to 351.11, 484.63 and 220.11

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Solution

The fourth proportional to 351.11, 484.63 and 220.11 is: 303.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.11 : 484.63 = 220.11 : x
  2. Step 2: Convert to fraction form
    351.11/484.63 = 220.11/x
  3. Step 3: Cross multiply
    351.11x = 484.63 × 220.11
  4. Step 4: Simplify right side
    351.11x = 106,671.36
  5. Step 5: Solve for x
    x = 106,671.36/351.11
  6. Step 6: Final answer
    x = 303.82

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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.