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Finding the Fourth Proportional to 637.35, 879.51 and 371.82

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Solution

The fourth proportional to 637.35, 879.51 and 371.82 is: 513.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.35 : 879.51 = 371.82 : x
  2. Step 2: Convert to fraction form
    637.35/879.51 = 371.82/x
  3. Step 3: Cross multiply
    637.35x = 879.51 × 371.82
  4. Step 4: Simplify right side
    637.35x = 327,019.41
  5. Step 5: Solve for x
    x = 327,019.41/637.35
  6. Step 6: Final answer
    x = 513.09

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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.