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Finding the Fourth Proportional to 439.04, 604.86 and 361.28

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Solution

The fourth proportional to 439.04, 604.86 and 361.28 is: 497.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.04 : 604.86 = 361.28 : x
  2. Step 2: Convert to fraction form
    439.04/604.86 = 361.28/x
  3. Step 3: Cross multiply
    439.04x = 604.86 × 361.28
  4. Step 4: Simplify right side
    439.04x = 218,523.82
  5. Step 5: Solve for x
    x = 218,523.82/439.04
  6. Step 6: Final answer
    x = 497.73

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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.