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Finding the Fourth Proportional to 958.12, 1,322.26 and 724.84

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Solution

The fourth proportional to 958.12, 1,322.26 and 724.84 is: 1,000.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.12 : 1,322.26 = 724.84 : x
  2. Step 2: Convert to fraction form
    958.12/1,322.26 = 724.84/x
  3. Step 3: Cross multiply
    958.12x = 1,322.26 × 724.84
  4. Step 4: Simplify right side
    958.12x = 958,426.94
  5. Step 5: Solve for x
    x = 958,426.94/958.12
  6. Step 6: Final answer
    x = 1,000.32

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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.