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Finding the Fourth Proportional to 338.48, 467.12 and 191.15

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Solution

The fourth proportional to 338.48, 467.12 and 191.15 is: 263.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.48 : 467.12 = 191.15 : x
  2. Step 2: Convert to fraction form
    338.48/467.12 = 191.15/x
  3. Step 3: Cross multiply
    338.48x = 467.12 × 191.15
  4. Step 4: Simplify right side
    338.48x = 89,289.99
  5. Step 5: Solve for x
    x = 89,289.99/338.48
  6. Step 6: Final answer
    x = 263.80

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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.