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Finding the Fourth Proportional to 964.97, 1,447.23 and 271.71

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Solution

The fourth proportional to 964.97, 1,447.23 and 271.71 is: 407.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    964.97 : 1,447.23 = 271.71 : x
  2. Step 2: Convert to fraction form
    964.97/1,447.23 = 271.71/x
  3. Step 3: Cross multiply
    964.97x = 1,447.23 × 271.71
  4. Step 4: Simplify right side
    964.97x = 393,227.88
  5. Step 5: Solve for x
    x = 393,227.88/964.97
  6. Step 6: Final answer
    x = 407.50

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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.