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Finding the Fourth Proportional to 482.20, 662.27 and 446.20

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Solution

The fourth proportional to 482.20, 662.27 and 446.20 is: 612.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.20 : 662.27 = 446.20 : x
  2. Step 2: Convert to fraction form
    482.20/662.27 = 446.20/x
  3. Step 3: Cross multiply
    482.20x = 662.27 × 446.20
  4. Step 4: Simplify right side
    482.20x = 295,504.87
  5. Step 5: Solve for x
    x = 295,504.87/482.20
  6. Step 6: Final answer
    x = 612.83

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.