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Finding the Fourth Proportional to 382.68, 527.38 and 351.64

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Solution

The fourth proportional to 382.68, 527.38 and 351.64 is: 484.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.68 : 527.38 = 351.64 : x
  2. Step 2: Convert to fraction form
    382.68/527.38 = 351.64/x
  3. Step 3: Cross multiply
    382.68x = 527.38 × 351.64
  4. Step 4: Simplify right side
    382.68x = 185,447.90
  5. Step 5: Solve for x
    x = 185,447.90/382.68
  6. Step 6: Final answer
    x = 484.60

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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.