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Finding the Fourth Proportional to 850.30, 1,276.72 and 694.60

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Solution

The fourth proportional to 850.30, 1,276.72 and 694.60 is: 1,042.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.30 : 1,276.72 = 694.60 : x
  2. Step 2: Convert to fraction form
    850.30/1,276.72 = 694.60/x
  3. Step 3: Cross multiply
    850.30x = 1,276.72 × 694.60
  4. Step 4: Simplify right side
    850.30x = 886,809.71
  5. Step 5: Solve for x
    x = 886,809.71/850.30
  6. Step 6: Final answer
    x = 1,042.94

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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.