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Finding the Fourth Proportional to 873.30, 1,205.27 and 799.48

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Solution

The fourth proportional to 873.30, 1,205.27 and 799.48 is: 1,103.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    873.30 : 1,205.27 = 799.48 : x
  2. Step 2: Convert to fraction form
    873.30/1,205.27 = 799.48/x
  3. Step 3: Cross multiply
    873.30x = 1,205.27 × 799.48
  4. Step 4: Simplify right side
    873.30x = 963,585.26
  5. Step 5: Solve for x
    x = 963,585.26/873.30
  6. Step 6: Final answer
    x = 1,103.39

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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.