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Finding the Fourth Proportional to 572.01, 856.63 and 327.79

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Solution

The fourth proportional to 572.01, 856.63 and 327.79 is: 490.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.01 : 856.63 = 327.79 : x
  2. Step 2: Convert to fraction form
    572.01/856.63 = 327.79/x
  3. Step 3: Cross multiply
    572.01x = 856.63 × 327.79
  4. Step 4: Simplify right side
    572.01x = 280,793.11
  5. Step 5: Solve for x
    x = 280,793.11/572.01
  6. Step 6: Final answer
    x = 490.89

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