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Finding the Fourth Proportional to 327.37, 490.10 and 286.87

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Solution

The fourth proportional to 327.37, 490.10 and 286.87 is: 429.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.37 : 490.10 = 286.87 : x
  2. Step 2: Convert to fraction form
    327.37/490.10 = 286.87/x
  3. Step 3: Cross multiply
    327.37x = 490.10 × 286.87
  4. Step 4: Simplify right side
    327.37x = 140,594.99
  5. Step 5: Solve for x
    x = 140,594.99/327.37
  6. Step 6: Final answer
    x = 429.47

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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.