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Finding the Fourth Proportional to 719.38, 1,078.96 and 232.36

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Solution

The fourth proportional to 719.38, 1,078.96 and 232.36 is: 348.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.38 : 1,078.96 = 232.36 : x
  2. Step 2: Convert to fraction form
    719.38/1,078.96 = 232.36/x
  3. Step 3: Cross multiply
    719.38x = 1,078.96 × 232.36
  4. Step 4: Simplify right side
    719.38x = 250,705.98
  5. Step 5: Solve for x
    x = 250,705.98/719.38
  6. Step 6: Final answer
    x = 348.51

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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.