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Finding the Fourth Proportional to 338.06, 466.79 and 220.09

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Solution

The fourth proportional to 338.06, 466.79 and 220.09 is: 303.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.06 : 466.79 = 220.09 : x
  2. Step 2: Convert to fraction form
    338.06/466.79 = 220.09/x
  3. Step 3: Cross multiply
    338.06x = 466.79 × 220.09
  4. Step 4: Simplify right side
    338.06x = 102,735.81
  5. Step 5: Solve for x
    x = 102,735.81/338.06
  6. Step 6: Final answer
    x = 303.90

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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.