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Finding the Fourth Proportional to 394.70, 588.96 and 353.70

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Solution

The fourth proportional to 394.70, 588.96 and 353.70 is: 527.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.70 : 588.96 = 353.70 : x
  2. Step 2: Convert to fraction form
    394.70/588.96 = 353.70/x
  3. Step 3: Cross multiply
    394.70x = 588.96 × 353.70
  4. Step 4: Simplify right side
    394.70x = 208,315.15
  5. Step 5: Solve for x
    x = 208,315.15/394.70
  6. Step 6: Final answer
    x = 527.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.