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Finding the Fourth Proportional to 958.88, 1,329.02 and 943.22

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Solution

The fourth proportional to 958.88, 1,329.02 and 943.22 is: 1,307.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.88 : 1,329.02 = 943.22 : x
  2. Step 2: Convert to fraction form
    958.88/1,329.02 = 943.22/x
  3. Step 3: Cross multiply
    958.88x = 1,329.02 × 943.22
  4. Step 4: Simplify right side
    958.88x = 1,253,558.24
  5. Step 5: Solve for x
    x = 1,253,558.24/958.88
  6. Step 6: Final answer
    x = 1,307.32

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.