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Finding the Fourth Proportional to 322.86, 445.59 and 204.89

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Solution

The fourth proportional to 322.86, 445.59 and 204.89 is: 282.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.86 : 445.59 = 204.89 : x
  2. Step 2: Convert to fraction form
    322.86/445.59 = 204.89/x
  3. Step 3: Cross multiply
    322.86x = 445.59 × 204.89
  4. Step 4: Simplify right side
    322.86x = 91,298.05
  5. Step 5: Solve for x
    x = 91,298.05/322.86
  6. Step 6: Final answer
    x = 282.78

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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.