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Finding the Fourth Proportional to 395.98, 593.55 and 213.32

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Solution

The fourth proportional to 395.98, 593.55 and 213.32 is: 319.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.98 : 593.55 = 213.32 : x
  2. Step 2: Convert to fraction form
    395.98/593.55 = 213.32/x
  3. Step 3: Cross multiply
    395.98x = 593.55 × 213.32
  4. Step 4: Simplify right side
    395.98x = 126,617.57
  5. Step 5: Solve for x
    x = 126,617.57/395.98
  6. Step 6: Final answer
    x = 319.76

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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.