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Finding the Fourth Proportional to 604.47, 905.31 and 441.75

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Solution

The fourth proportional to 604.47, 905.31 and 441.75 is: 661.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.47 : 905.31 = 441.75 : x
  2. Step 2: Convert to fraction form
    604.47/905.31 = 441.75/x
  3. Step 3: Cross multiply
    604.47x = 905.31 × 441.75
  4. Step 4: Simplify right side
    604.47x = 399,920.69
  5. Step 5: Solve for x
    x = 399,920.69/604.47
  6. Step 6: Final answer
    x = 661.61

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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.