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Finding the Fourth Proportional to 363, 499.22 and 288.44

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Solution

The fourth proportional to 363, 499.22 and 288.44 is: 396.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    363 : 499.22 = 288.44 : x
  2. Step 2: Convert to fraction form
    363/499.22 = 288.44/x
  3. Step 3: Cross multiply
    363x = 499.22 × 288.44
  4. Step 4: Simplify right side
    363x = 143,995.02
  5. Step 5: Solve for x
    x = 143,995.02/363
  6. Step 6: Final answer
    x = 396.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.