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Finding the Fourth Proportional to 799.60, 1,108.48 and 755.80

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Solution

The fourth proportional to 799.60, 1,108.48 and 755.80 is: 1,047.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.60 : 1,108.48 = 755.80 : x
  2. Step 2: Convert to fraction form
    799.60/1,108.48 = 755.80/x
  3. Step 3: Cross multiply
    799.60x = 1,108.48 × 755.80
  4. Step 4: Simplify right side
    799.60x = 837,789.18
  5. Step 5: Solve for x
    x = 837,789.18/799.60
  6. Step 6: Final answer
    x = 1,047.76

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.