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Finding the Fourth Proportional to 637.28, 955.24 and 271.87

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Solution

The fourth proportional to 637.28, 955.24 and 271.87 is: 407.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.28 : 955.24 = 271.87 : x
  2. Step 2: Convert to fraction form
    637.28/955.24 = 271.87/x
  3. Step 3: Cross multiply
    637.28x = 955.24 × 271.87
  4. Step 4: Simplify right side
    637.28x = 259,704.93
  5. Step 5: Solve for x
    x = 259,704.93/637.28
  6. Step 6: Final answer
    x = 407.52

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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.