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Finding the Fourth Proportional to 326.63, 450.69 and 216.04

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Solution

The fourth proportional to 326.63, 450.69 and 216.04 is: 298.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.63 : 450.69 = 216.04 : x
  2. Step 2: Convert to fraction form
    326.63/450.69 = 216.04/x
  3. Step 3: Cross multiply
    326.63x = 450.69 × 216.04
  4. Step 4: Simplify right side
    326.63x = 97,366.82
  5. Step 5: Solve for x
    x = 97,366.82/326.63
  6. Step 6: Final answer
    x = 298.10

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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.