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Finding the Fourth Proportional to 637.09, 955.76 and 271.87

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Solution

The fourth proportional to 637.09, 955.76 and 271.87 is: 407.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.09 : 955.76 = 271.87 : x
  2. Step 2: Convert to fraction form
    637.09/955.76 = 271.87/x
  3. Step 3: Cross multiply
    637.09x = 955.76 × 271.87
  4. Step 4: Simplify right side
    637.09x = 259,842.47
  5. Step 5: Solve for x
    x = 259,842.47/637.09
  6. Step 6: Final answer
    x = 407.86

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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.