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Finding the Fourth Proportional to 949.03, 1,309.90 and 850.61

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Solution

The fourth proportional to 949.03, 1,309.90 and 850.61 is: 1,174.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    949.03 : 1,309.90 = 850.61 : x
  2. Step 2: Convert to fraction form
    949.03/1,309.90 = 850.61/x
  3. Step 3: Cross multiply
    949.03x = 1,309.90 × 850.61
  4. Step 4: Simplify right side
    949.03x = 1,114,214.04
  5. Step 5: Solve for x
    x = 1,114,214.04/949.03
  6. Step 6: Final answer
    x = 1,174.06

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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.