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Finding the Fourth Proportional to 604.37, 905.74 and 330.05

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Solution

The fourth proportional to 604.37, 905.74 and 330.05 is: 494.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.37 : 905.74 = 330.05 : x
  2. Step 2: Convert to fraction form
    604.37/905.74 = 330.05/x
  3. Step 3: Cross multiply
    604.37x = 905.74 × 330.05
  4. Step 4: Simplify right side
    604.37x = 298,939.49
  5. Step 5: Solve for x
    x = 298,939.49/604.37
  6. Step 6: Final answer
    x = 494.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.