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Finding the Fourth Proportional to 951.25, 1,425.80 and 719.39

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Solution

The fourth proportional to 951.25, 1,425.80 and 719.39 is: 1,078.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    951.25 : 1,425.80 = 719.39 : x
  2. Step 2: Convert to fraction form
    951.25/1,425.80 = 719.39/x
  3. Step 3: Cross multiply
    951.25x = 1,425.80 × 719.39
  4. Step 4: Simplify right side
    951.25x = 1,025,704.50
  5. Step 5: Solve for x
    x = 1,025,704.50/951.25
  6. Step 6: Final answer
    x = 1,078.27

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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.