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Finding the Fourth Proportional to 637.31, 879.51 and 375.27

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Solution

The fourth proportional to 637.31, 879.51 and 375.27 is: 517.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.31 : 879.51 = 375.27 : x
  2. Step 2: Convert to fraction form
    637.31/879.51 = 375.27/x
  3. Step 3: Cross multiply
    637.31x = 879.51 × 375.27
  4. Step 4: Simplify right side
    637.31x = 330,053.72
  5. Step 5: Solve for x
    x = 330,053.72/637.31
  6. Step 6: Final answer
    x = 517.89

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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.