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Finding the Fourth Proportional to 958.99, 1,324.01 and 627.97

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Solution

The fourth proportional to 958.99, 1,324.01 and 627.97 is: 866.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.99 : 1,324.01 = 627.97 : x
  2. Step 2: Convert to fraction form
    958.99/1,324.01 = 627.97/x
  3. Step 3: Cross multiply
    958.99x = 1,324.01 × 627.97
  4. Step 4: Simplify right side
    958.99x = 831,438.56
  5. Step 5: Solve for x
    x = 831,438.56/958.99
  6. Step 6: Final answer
    x = 866.99

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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.