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Finding the Fourth Proportional to 445.22, 613.90 and 362.17

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Solution

The fourth proportional to 445.22, 613.90 and 362.17 is: 499.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.22 : 613.90 = 362.17 : x
  2. Step 2: Convert to fraction form
    445.22/613.90 = 362.17/x
  3. Step 3: Cross multiply
    445.22x = 613.90 × 362.17
  4. Step 4: Simplify right side
    445.22x = 222,338.40
  5. Step 5: Solve for x
    x = 222,338.40/445.22
  6. Step 6: Final answer
    x = 499.39

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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.