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Finding the Fourth Proportional to 533.31, 799.28 and 208.50

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Solution

The fourth proportional to 533.31, 799.28 and 208.50 is: 312.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.31 : 799.28 = 208.50 : x
  2. Step 2: Convert to fraction form
    533.31/799.28 = 208.50/x
  3. Step 3: Cross multiply
    533.31x = 799.28 × 208.50
  4. Step 4: Simplify right side
    533.31x = 166,648.84
  5. Step 5: Solve for x
    x = 166,648.84/533.31
  6. Step 6: Final answer
    x = 312.48

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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.