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Finding the Fourth Proportional to 480.42, 662.69 and 363.78

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Solution

The fourth proportional to 480.42, 662.69 and 363.78 is: 501.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    480.42 : 662.69 = 363.78 : x
  2. Step 2: Convert to fraction form
    480.42/662.69 = 363.78/x
  3. Step 3: Cross multiply
    480.42x = 662.69 × 363.78
  4. Step 4: Simplify right side
    480.42x = 241,073.37
  5. Step 5: Solve for x
    x = 241,073.37/480.42
  6. Step 6: Final answer
    x = 501.80

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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.