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Finding the Fourth Proportional to 958.76, 1,322.75 and 627.38

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Solution

The fourth proportional to 958.76, 1,322.75 and 627.38 is: 865.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.76 : 1,322.75 = 627.38 : x
  2. Step 2: Convert to fraction form
    958.76/1,322.75 = 627.38/x
  3. Step 3: Cross multiply
    958.76x = 1,322.75 × 627.38
  4. Step 4: Simplify right side
    958.76x = 829,857.14
  5. Step 5: Solve for x
    x = 829,857.14/958.76
  6. Step 6: Final answer
    x = 865.56

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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.