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Finding the Fourth Proportional to 637.94, 879.73 and 451.57

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Solution

The fourth proportional to 637.94, 879.73 and 451.57 is: 622.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.94 : 879.73 = 451.57 : x
  2. Step 2: Convert to fraction form
    637.94/879.73 = 451.57/x
  3. Step 3: Cross multiply
    637.94x = 879.73 × 451.57
  4. Step 4: Simplify right side
    637.94x = 397,259.68
  5. Step 5: Solve for x
    x = 397,259.68/637.94
  6. Step 6: Final answer
    x = 622.72

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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.