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Finding the Fourth Proportional to 387.29, 582.15 and 333.83

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Solution

The fourth proportional to 387.29, 582.15 and 333.83 is: 501.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    387.29 : 582.15 = 333.83 : x
  2. Step 2: Convert to fraction form
    387.29/582.15 = 333.83/x
  3. Step 3: Cross multiply
    387.29x = 582.15 × 333.83
  4. Step 4: Simplify right side
    387.29x = 194,336.22
  5. Step 5: Solve for x
    x = 194,336.22/387.29
  6. Step 6: Final answer
    x = 501.79

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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.