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Finding the Fourth Proportional to 799.36, 1,103.30 and 505.02

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Solution

The fourth proportional to 799.36, 1,103.30 and 505.02 is: 697.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.36 : 1,103.30 = 505.02 : x
  2. Step 2: Convert to fraction form
    799.36/1,103.30 = 505.02/x
  3. Step 3: Cross multiply
    799.36x = 1,103.30 × 505.02
  4. Step 4: Simplify right side
    799.36x = 557,188.57
  5. Step 5: Solve for x
    x = 557,188.57/799.36
  6. Step 6: Final answer
    x = 697.04

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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.