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Finding the Fourth Proportional to 218.84, 326.34 and 204.26

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Solution

The fourth proportional to 218.84, 326.34 and 204.26 is: 304.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.84 : 326.34 = 204.26 : x
  2. Step 2: Convert to fraction form
    218.84/326.34 = 204.26/x
  3. Step 3: Cross multiply
    218.84x = 326.34 × 204.26
  4. Step 4: Simplify right side
    218.84x = 66,658.21
  5. Step 5: Solve for x
    x = 66,658.21/218.84
  6. Step 6: Final answer
    x = 304.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.