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Finding the Fourth Proportional to 637.02, 871.52 and 634.29

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Solution

The fourth proportional to 637.02, 871.52 and 634.29 is: 867.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.02 : 871.52 = 634.29 : x
  2. Step 2: Convert to fraction form
    637.02/871.52 = 634.29/x
  3. Step 3: Cross multiply
    637.02x = 871.52 × 634.29
  4. Step 4: Simplify right side
    637.02x = 552,796.42
  5. Step 5: Solve for x
    x = 552,796.42/637.02
  6. Step 6: Final answer
    x = 867.79

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.