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Finding the Fourth Proportional to 395.32, 590.60 and 330.52

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Solution

The fourth proportional to 395.32, 590.60 and 330.52 is: 493.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.32 : 590.60 = 330.52 : x
  2. Step 2: Convert to fraction form
    395.32/590.60 = 330.52/x
  3. Step 3: Cross multiply
    395.32x = 590.60 × 330.52
  4. Step 4: Simplify right side
    395.32x = 195,205.11
  5. Step 5: Solve for x
    x = 195,205.11/395.32
  6. Step 6: Final answer
    x = 493.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.