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Finding the Fourth Proportional to 572.14, 856.84 and 327.92

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Solution

The fourth proportional to 572.14, 856.84 and 327.92 is: 491.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.14 : 856.84 = 327.92 : x
  2. Step 2: Convert to fraction form
    572.14/856.84 = 327.92/x
  3. Step 3: Cross multiply
    572.14x = 856.84 × 327.92
  4. Step 4: Simplify right side
    572.14x = 280,974.97
  5. Step 5: Solve for x
    x = 280,974.97/572.14
  6. Step 6: Final answer
    x = 491.09

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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.