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Finding the Fourth Proportional to 394.90, 591.74 and 333.74

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Solution

The fourth proportional to 394.90, 591.74 and 333.74 is: 500.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.90 : 591.74 = 333.74 : x
  2. Step 2: Convert to fraction form
    394.90/591.74 = 333.74/x
  3. Step 3: Cross multiply
    394.90x = 591.74 × 333.74
  4. Step 4: Simplify right side
    394.90x = 197,487.31
  5. Step 5: Solve for x
    x = 197,487.31/394.90
  6. Step 6: Final answer
    x = 500.09

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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.