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Finding the Fourth Proportional to 326.16, 450 and 209.52

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Solution

The fourth proportional to 326.16, 450 and 209.52 is: 289.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    326.16 : 450 = 209.52 : x
  2. Step 2: Convert to fraction form
    326.16/450 = 209.52/x
  3. Step 3: Cross multiply
    326.16x = 450 × 209.52
  4. Step 4: Simplify right side
    326.16x = 94,284
  5. Step 5: Solve for x
    x = 94,284/326.16
  6. Step 6: Final answer
    x = 289.07

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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.