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Finding the Fourth Proportional to 850.94, 1,276.41 and 635.88

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Solution

The fourth proportional to 850.94, 1,276.41 and 635.88 is: 953.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.94 : 1,276.41 = 635.88 : x
  2. Step 2: Convert to fraction form
    850.94/1,276.41 = 635.88/x
  3. Step 3: Cross multiply
    850.94x = 1,276.41 × 635.88
  4. Step 4: Simplify right side
    850.94x = 811,643.59
  5. Step 5: Solve for x
    x = 811,643.59/850.94
  6. Step 6: Final answer
    x = 953.83

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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.