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Finding the Fourth Proportional to 800.87, 1,104.48 and 535.59

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Solution

The fourth proportional to 800.87, 1,104.48 and 535.59 is: 738.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.87 : 1,104.48 = 535.59 : x
  2. Step 2: Convert to fraction form
    800.87/1,104.48 = 535.59/x
  3. Step 3: Cross multiply
    800.87x = 1,104.48 × 535.59
  4. Step 4: Simplify right side
    800.87x = 591,548.44
  5. Step 5: Solve for x
    x = 591,548.44/800.87
  6. Step 6: Final answer
    x = 738.64

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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.