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Finding the Fourth Proportional to 533.94, 800.72 and 187.20

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Solution

The fourth proportional to 533.94, 800.72 and 187.20 is: 280.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.94 : 800.72 = 187.20 : x
  2. Step 2: Convert to fraction form
    533.94/800.72 = 187.20/x
  3. Step 3: Cross multiply
    533.94x = 800.72 × 187.20
  4. Step 4: Simplify right side
    533.94x = 149,894.78
  5. Step 5: Solve for x
    x = 149,894.78/533.94
  6. Step 6: Final answer
    x = 280.73

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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.