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Finding the Fourth Proportional to 958.25, 1,322.39 and 627.23

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Solution

The fourth proportional to 958.25, 1,322.39 and 627.23 is: 865.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.25 : 1,322.39 = 627.23 : x
  2. Step 2: Convert to fraction form
    958.25/1,322.39 = 627.23/x
  3. Step 3: Cross multiply
    958.25x = 1,322.39 × 627.23
  4. Step 4: Simplify right side
    958.25x = 829,442.68
  5. Step 5: Solve for x
    x = 829,442.68/958.25
  6. Step 6: Final answer
    x = 865.58

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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.