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Finding the Fourth Proportional to 958.06, 1,435.41 and 682.72

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Solution

The fourth proportional to 958.06, 1,435.41 and 682.72 is: 1,022.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.06 : 1,435.41 = 682.72 : x
  2. Step 2: Convert to fraction form
    958.06/1,435.41 = 682.72/x
  3. Step 3: Cross multiply
    958.06x = 1,435.41 × 682.72
  4. Step 4: Simplify right side
    958.06x = 979,983.12
  5. Step 5: Solve for x
    x = 979,983.12/958.06
  6. Step 6: Final answer
    x = 1,022.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.