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Finding the Fourth Proportional to 636.93, 955.70 and 271.82

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Solution

The fourth proportional to 636.93, 955.70 and 271.82 is: 407.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.93 : 955.70 = 271.82 : x
  2. Step 2: Convert to fraction form
    636.93/955.70 = 271.82/x
  3. Step 3: Cross multiply
    636.93x = 955.70 × 271.82
  4. Step 4: Simplify right side
    636.93x = 259,772.24
  5. Step 5: Solve for x
    x = 259,772.24/636.93
  6. Step 6: Final answer
    x = 407.85

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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.