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Finding the Fourth Proportional to 396.34, 593.56 and 210.74

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Solution

The fourth proportional to 396.34, 593.56 and 210.74 is: 315.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.34 : 593.56 = 210.74 : x
  2. Step 2: Convert to fraction form
    396.34/593.56 = 210.74/x
  3. Step 3: Cross multiply
    396.34x = 593.56 × 210.74
  4. Step 4: Simplify right side
    396.34x = 125,087.79
  5. Step 5: Solve for x
    x = 125,087.79/396.34
  6. Step 6: Final answer
    x = 315.61

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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.