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Finding the Fourth Proportional to 326.26, 488.35 and 216.35

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Solution

The fourth proportional to 326.26, 488.35 and 216.35 is: 323.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.26 : 488.35 = 216.35 : x
  2. Step 2: Convert to fraction form
    326.26/488.35 = 216.35/x
  3. Step 3: Cross multiply
    326.26x = 488.35 × 216.35
  4. Step 4: Simplify right side
    326.26x = 105,654.52
  5. Step 5: Solve for x
    x = 105,654.52/326.26
  6. Step 6: Final answer
    x = 323.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.