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Finding the Fourth Proportional to 958.75, 1,323.17 and 627.36

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Solution

The fourth proportional to 958.75, 1,323.17 and 627.36 is: 865.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.75 : 1,323.17 = 627.36 : x
  2. Step 2: Convert to fraction form
    958.75/1,323.17 = 627.36/x
  3. Step 3: Cross multiply
    958.75x = 1,323.17 × 627.36
  4. Step 4: Simplify right side
    958.75x = 830,098.19
  5. Step 5: Solve for x
    x = 830,098.19/958.75
  6. Step 6: Final answer
    x = 865.82

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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.