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Finding the Fourth Proportional to 533.20, 800.03 and 186.78

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Solution

The fourth proportional to 533.20, 800.03 and 186.78 is: 280.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.20 : 800.03 = 186.78 : x
  2. Step 2: Convert to fraction form
    533.20/800.03 = 186.78/x
  3. Step 3: Cross multiply
    533.20x = 800.03 × 186.78
  4. Step 4: Simplify right side
    533.20x = 149,429.60
  5. Step 5: Solve for x
    x = 149,429.60/533.20
  6. Step 6: Final answer
    x = 280.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.