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Finding the Fourth Proportional to 338.76, 467.84 and 207.86

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Solution

The fourth proportional to 338.76, 467.84 and 207.86 is: 287.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.76 : 467.84 = 207.86 : x
  2. Step 2: Convert to fraction form
    338.76/467.84 = 207.86/x
  3. Step 3: Cross multiply
    338.76x = 467.84 × 207.86
  4. Step 4: Simplify right side
    338.76x = 97,245.22
  5. Step 5: Solve for x
    x = 97,245.22/338.76
  6. Step 6: Final answer
    x = 287.06

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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.