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Finding the Fourth Proportional to 652.76, 979.26 and 344.56

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Solution

The fourth proportional to 652.76, 979.26 and 344.56 is: 516.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.76 : 979.26 = 344.56 : x
  2. Step 2: Convert to fraction form
    652.76/979.26 = 344.56/x
  3. Step 3: Cross multiply
    652.76x = 979.26 × 344.56
  4. Step 4: Simplify right side
    652.76x = 337,413.83
  5. Step 5: Solve for x
    x = 337,413.83/652.76
  6. Step 6: Final answer
    x = 516.90

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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.