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Finding the Fourth Proportional to 396.36, 593.60 and 309.06

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Solution

The fourth proportional to 396.36, 593.60 and 309.06 is: 462.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    396.36 : 593.60 = 309.06 : x
  2. Step 2: Convert to fraction form
    396.36/593.60 = 309.06/x
  3. Step 3: Cross multiply
    396.36x = 593.60 × 309.06
  4. Step 4: Simplify right side
    396.36x = 183,456.47
  5. Step 5: Solve for x
    x = 183,456.47/396.36
  6. Step 6: Final answer
    x = 462.85

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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.