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Finding the Fourth Proportional to 396.35, 595.21 and 235.05

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Solution

The fourth proportional to 396.35, 595.21 and 235.05 is: 352.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.35 : 595.21 = 235.05 : x
  2. Step 2: Convert to fraction form
    396.35/595.21 = 235.05/x
  3. Step 3: Cross multiply
    396.35x = 595.21 × 235.05
  4. Step 4: Simplify right side
    396.35x = 139,901.13
  5. Step 5: Solve for x
    x = 139,901.13/396.35
  6. Step 6: Final answer
    x = 352.97

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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.