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Finding the Fourth Proportional to 650.97, 977.79 and 553.61

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Solution

The fourth proportional to 650.97, 977.79 and 553.61 is: 831.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    650.97 : 977.79 = 553.61 : x
  2. Step 2: Convert to fraction form
    650.97/977.79 = 553.61/x
  3. Step 3: Cross multiply
    650.97x = 977.79 × 553.61
  4. Step 4: Simplify right side
    650.97x = 541,309.43
  5. Step 5: Solve for x
    x = 541,309.43/650.97
  6. Step 6: Final answer
    x = 831.54

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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.