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Finding the Fourth Proportional to 533.30, 800 and 186.60

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Solution

The fourth proportional to 533.30, 800 and 186.60 is: 279.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.30 : 800 = 186.60 : x
  2. Step 2: Convert to fraction form
    533.30/800 = 186.60/x
  3. Step 3: Cross multiply
    533.30x = 800 × 186.60
  4. Step 4: Simplify right side
    533.30x = 149,280
  5. Step 5: Solve for x
    x = 149,280/533.30
  6. Step 6: Final answer
    x = 279.92

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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.