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Finding the Fourth Proportional to 761.17, 1,141.75 and 267.94

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Solution

The fourth proportional to 761.17, 1,141.75 and 267.94 is: 401.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    761.17 : 1,141.75 = 267.94 : x
  2. Step 2: Convert to fraction form
    761.17/1,141.75 = 267.94/x
  3. Step 3: Cross multiply
    761.17x = 1,141.75 × 267.94
  4. Step 4: Simplify right side
    761.17x = 305,917.99
  5. Step 5: Solve for x
    x = 305,917.99/761.17
  6. Step 6: Final answer
    x = 401.91

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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.