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Finding the Fourth Proportional to 719.67, 1,079.30 and 232.46

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Solution

The fourth proportional to 719.67, 1,079.30 and 232.46 is: 348.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.67 : 1,079.30 = 232.46 : x
  2. Step 2: Convert to fraction form
    719.67/1,079.30 = 232.46/x
  3. Step 3: Cross multiply
    719.67x = 1,079.30 × 232.46
  4. Step 4: Simplify right side
    719.67x = 250,894.08
  5. Step 5: Solve for x
    x = 250,894.08/719.67
  6. Step 6: Final answer
    x = 348.62

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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.