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Finding the Fourth Proportional to 958.89, 1,324.98 and 749.60

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Solution

The fourth proportional to 958.89, 1,324.98 and 749.60 is: 1,035.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.89 : 1,324.98 = 749.60 : x
  2. Step 2: Convert to fraction form
    958.89/1,324.98 = 749.60/x
  3. Step 3: Cross multiply
    958.89x = 1,324.98 × 749.60
  4. Step 4: Simplify right side
    958.89x = 993,198.38
  5. Step 5: Solve for x
    x = 993,198.38/958.89
  6. Step 6: Final answer
    x = 1,035.78

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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.