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Finding the Fourth Proportional to 799.54, 1,102.89 and 488.50

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Solution

The fourth proportional to 799.54, 1,102.89 and 488.50 is: 673.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.54 : 1,102.89 = 488.50 : x
  2. Step 2: Convert to fraction form
    799.54/1,102.89 = 488.50/x
  3. Step 3: Cross multiply
    799.54x = 1,102.89 × 488.50
  4. Step 4: Simplify right side
    799.54x = 538,761.77
  5. Step 5: Solve for x
    x = 538,761.77/799.54
  6. Step 6: Final answer
    x = 673.84

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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.