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Finding the Fourth Proportional to 326.75, 450.40 and 247.82

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Solution

The fourth proportional to 326.75, 450.40 and 247.82 is: 341.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.75 : 450.40 = 247.82 : x
  2. Step 2: Convert to fraction form
    326.75/450.40 = 247.82/x
  3. Step 3: Cross multiply
    326.75x = 450.40 × 247.82
  4. Step 4: Simplify right side
    326.75x = 111,615.26
  5. Step 5: Solve for x
    x = 111,615.26/326.75
  6. Step 6: Final answer
    x = 341.59

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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.