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Finding the Fourth Proportional to 966.94, 1,449.01 and 761.92

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Solution

The fourth proportional to 966.94, 1,449.01 and 761.92 is: 1,141.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.94 : 1,449.01 = 761.92 : x
  2. Step 2: Convert to fraction form
    966.94/1,449.01 = 761.92/x
  3. Step 3: Cross multiply
    966.94x = 1,449.01 × 761.92
  4. Step 4: Simplify right side
    966.94x = 1,104,029.70
  5. Step 5: Solve for x
    x = 1,104,029.70/966.94
  6. Step 6: Final answer
    x = 1,141.78

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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.