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Finding the Fourth Proportional to 887.82, 1,331.79 and 271.56

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Solution

The fourth proportional to 887.82, 1,331.79 and 271.56 is: 407.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    887.82 : 1,331.79 = 271.56 : x
  2. Step 2: Convert to fraction form
    887.82/1,331.79 = 271.56/x
  3. Step 3: Cross multiply
    887.82x = 1,331.79 × 271.56
  4. Step 4: Simplify right side
    887.82x = 361,660.89
  5. Step 5: Solve for x
    x = 361,660.89/887.82
  6. Step 6: Final answer
    x = 407.36

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.