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Finding the Fourth Proportional to 380.96, 570.56 and 327.59

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Solution

The fourth proportional to 380.96, 570.56 and 327.59 is: 490.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    380.96 : 570.56 = 327.59 : x
  2. Step 2: Convert to fraction form
    380.96/570.56 = 327.59/x
  3. Step 3: Cross multiply
    380.96x = 570.56 × 327.59
  4. Step 4: Simplify right side
    380.96x = 186,905.26
  5. Step 5: Solve for x
    x = 186,905.26/380.96
  6. Step 6: Final answer
    x = 490.62

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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.