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Finding the Fourth Proportional to 339.82, 471.52 and 326.11

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Solution

The fourth proportional to 339.82, 471.52 and 326.11 is: 452.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.82 : 471.52 = 326.11 : x
  2. Step 2: Convert to fraction form
    339.82/471.52 = 326.11/x
  3. Step 3: Cross multiply
    339.82x = 471.52 × 326.11
  4. Step 4: Simplify right side
    339.82x = 153,767.39
  5. Step 5: Solve for x
    x = 153,767.39/339.82
  6. Step 6: Final answer
    x = 452.50

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.