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Finding the Fourth Proportional to 637.05, 879.22 and 440.83

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Solution

The fourth proportional to 637.05, 879.22 and 440.83 is: 608.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.05 : 879.22 = 440.83 : x
  2. Step 2: Convert to fraction form
    637.05/879.22 = 440.83/x
  3. Step 3: Cross multiply
    637.05x = 879.22 × 440.83
  4. Step 4: Simplify right side
    637.05x = 387,586.55
  5. Step 5: Solve for x
    x = 387,586.55/637.05
  6. Step 6: Final answer
    x = 608.41

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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.