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Finding the Fourth Proportional to 966.01, 1,334.21 and 635.91

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Solution

The fourth proportional to 966.01, 1,334.21 and 635.91 is: 878.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.01 : 1,334.21 = 635.91 : x
  2. Step 2: Convert to fraction form
    966.01/1,334.21 = 635.91/x
  3. Step 3: Cross multiply
    966.01x = 1,334.21 × 635.91
  4. Step 4: Simplify right side
    966.01x = 848,434.30
  5. Step 5: Solve for x
    x = 848,434.30/966.01
  6. Step 6: Final answer
    x = 878.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.