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Finding the Fourth Proportional to 338.20, 466.68 and 190.81

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Solution

The fourth proportional to 338.20, 466.68 and 190.81 is: 263.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.20 : 466.68 = 190.81 : x
  2. Step 2: Convert to fraction form
    338.20/466.68 = 190.81/x
  3. Step 3: Cross multiply
    338.20x = 466.68 × 190.81
  4. Step 4: Simplify right side
    338.20x = 89,048.51
  5. Step 5: Solve for x
    x = 89,048.51/338.20
  6. Step 6: Final answer
    x = 263.30

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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.