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Finding the Fourth Proportional to 394.67, 544.56 and 335.90

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Solution

The fourth proportional to 394.67, 544.56 and 335.90 is: 463.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.67 : 544.56 = 335.90 : x
  2. Step 2: Convert to fraction form
    394.67/544.56 = 335.90/x
  3. Step 3: Cross multiply
    394.67x = 544.56 × 335.90
  4. Step 4: Simplify right side
    394.67x = 182,914.98
  5. Step 5: Solve for x
    x = 182,914.98/394.67
  6. Step 6: Final answer
    x = 463.47

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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.