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Finding the Fourth Proportional to 382.56, 528.42 and 295.68

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Solution

The fourth proportional to 382.56, 528.42 and 295.68 is: 408.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.56 : 528.42 = 295.68 : x
  2. Step 2: Convert to fraction form
    382.56/528.42 = 295.68/x
  3. Step 3: Cross multiply
    382.56x = 528.42 × 295.68
  4. Step 4: Simplify right side
    382.56x = 156,243.23
  5. Step 5: Solve for x
    x = 156,243.23/382.56
  6. Step 6: Final answer
    x = 408.41

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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.