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Finding the Fourth Proportional to 338.50, 467.12 and 191.13

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Solution

The fourth proportional to 338.50, 467.12 and 191.13 is: 263.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.50 : 467.12 = 191.13 : x
  2. Step 2: Convert to fraction form
    338.50/467.12 = 191.13/x
  3. Step 3: Cross multiply
    338.50x = 467.12 × 191.13
  4. Step 4: Simplify right side
    338.50x = 89,280.65
  5. Step 5: Solve for x
    x = 89,280.65/338.50
  6. Step 6: Final answer
    x = 263.75

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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.