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Finding the Fourth Proportional to 958.26, 1,311.09 and 954.66

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Solution

The fourth proportional to 958.26, 1,311.09 and 954.66 is: 1,306.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    958.26 : 1,311.09 = 954.66 : x
  2. Step 2: Convert to fraction form
    958.26/1,311.09 = 954.66/x
  3. Step 3: Cross multiply
    958.26x = 1,311.09 × 954.66
  4. Step 4: Simplify right side
    958.26x = 1,251,645.18
  5. Step 5: Solve for x
    x = 1,251,645.18/958.26
  6. Step 6: Final answer
    x = 1,306.16

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.