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Finding the Fourth Proportional to 637.37, 879.65 and 371.90

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Solution

The fourth proportional to 637.37, 879.65 and 371.90 is: 513.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.37 : 879.65 = 371.90 : x
  2. Step 2: Convert to fraction form
    637.37/879.65 = 371.90/x
  3. Step 3: Cross multiply
    637.37x = 879.65 × 371.90
  4. Step 4: Simplify right side
    637.37x = 327,135.58
  5. Step 5: Solve for x
    x = 327,135.58/637.37
  6. Step 6: Final answer
    x = 513.26

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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.