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Finding the Fourth Proportional to 637.69, 956.49 and 272.41

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Solution

The fourth proportional to 637.69, 956.49 and 272.41 is: 408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.69 : 956.49 = 272.41 : x
  2. Step 2: Convert to fraction form
    637.69/956.49 = 272.41/x
  3. Step 3: Cross multiply
    637.69x = 956.49 × 272.41
  4. Step 4: Simplify right side
    637.69x = 260,557.44
  5. Step 5: Solve for x
    x = 260,557.44/637.69
  6. Step 6: Final answer
    x = 408.60

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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.