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Finding the Fourth Proportional to 796.92, 1,098.79 and 553.77

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Solution

The fourth proportional to 796.92, 1,098.79 and 553.77 is: 763.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.92 : 1,098.79 = 553.77 : x
  2. Step 2: Convert to fraction form
    796.92/1,098.79 = 553.77/x
  3. Step 3: Cross multiply
    796.92x = 1,098.79 × 553.77
  4. Step 4: Simplify right side
    796.92x = 608,476.94
  5. Step 5: Solve for x
    x = 608,476.94/796.92
  6. Step 6: Final answer
    x = 763.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.