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Finding the Fourth Proportional to 951.34, 1,427.36 and 679.57

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Solution

The fourth proportional to 951.34, 1,427.36 and 679.57 is: 1,019.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.34 : 1,427.36 = 679.57 : x
  2. Step 2: Convert to fraction form
    951.34/1,427.36 = 679.57/x
  3. Step 3: Cross multiply
    951.34x = 1,427.36 × 679.57
  4. Step 4: Simplify right side
    951.34x = 969,991.04
  5. Step 5: Solve for x
    x = 969,991.04/951.34
  6. Step 6: Final answer
    x = 1,019.61

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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.