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Finding the Fourth Proportional to 637.56, 958.19 and 422.51

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Solution

The fourth proportional to 637.56, 958.19 and 422.51 is: 634.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.56 : 958.19 = 422.51 : x
  2. Step 2: Convert to fraction form
    637.56/958.19 = 422.51/x
  3. Step 3: Cross multiply
    637.56x = 958.19 × 422.51
  4. Step 4: Simplify right side
    637.56x = 404,837.95
  5. Step 5: Solve for x
    x = 404,837.95/637.56
  6. Step 6: Final answer
    x = 634.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.