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Finding the Fourth Proportional to 362.15, 499.99 and 279.09

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Solution

The fourth proportional to 362.15, 499.99 and 279.09 is: 385.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.15 : 499.99 = 279.09 : x
  2. Step 2: Convert to fraction form
    362.15/499.99 = 279.09/x
  3. Step 3: Cross multiply
    362.15x = 499.99 × 279.09
  4. Step 4: Simplify right side
    362.15x = 139,542.21
  5. Step 5: Solve for x
    x = 139,542.21/362.15
  6. Step 6: Final answer
    x = 385.32

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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.