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Finding the Fourth Proportional to 799.40, 1,103.28 and 504.74

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Solution

The fourth proportional to 799.40, 1,103.28 and 504.74 is: 696.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.40 : 1,103.28 = 504.74 : x
  2. Step 2: Convert to fraction form
    799.40/1,103.28 = 504.74/x
  3. Step 3: Cross multiply
    799.40x = 1,103.28 × 504.74
  4. Step 4: Simplify right side
    799.40x = 556,869.55
  5. Step 5: Solve for x
    x = 556,869.55/799.40
  6. Step 6: Final answer
    x = 696.61

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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.