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Finding the Fourth Proportional to 637.43, 955.34 and 271.79

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Solution

The fourth proportional to 637.43, 955.34 and 271.79 is: 407.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.43 : 955.34 = 271.79 : x
  2. Step 2: Convert to fraction form
    637.43/955.34 = 271.79/x
  3. Step 3: Cross multiply
    637.43x = 955.34 × 271.79
  4. Step 4: Simplify right side
    637.43x = 259,651.85
  5. Step 5: Solve for x
    x = 259,651.85/637.43
  6. Step 6: Final answer
    x = 407.34

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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.