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Finding the Fourth Proportional to 396.09, 595.05 and 379.69

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Solution

The fourth proportional to 396.09, 595.05 and 379.69 is: 570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.09 : 595.05 = 379.69 : x
  2. Step 2: Convert to fraction form
    396.09/595.05 = 379.69/x
  3. Step 3: Cross multiply
    396.09x = 595.05 × 379.69
  4. Step 4: Simplify right side
    396.09x = 225,931.62
  5. Step 5: Solve for x
    x = 225,931.62/396.09
  6. Step 6: Final answer
    x = 570.40

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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.