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Finding the Fourth Proportional to 533.18, 801.05 and 518.90

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Solution

The fourth proportional to 533.18, 801.05 and 518.90 is: 779.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.18 : 801.05 = 518.90 : x
  2. Step 2: Convert to fraction form
    533.18/801.05 = 518.90/x
  3. Step 3: Cross multiply
    533.18x = 801.05 × 518.90
  4. Step 4: Simplify right side
    533.18x = 415,658.25
  5. Step 5: Solve for x
    x = 415,658.25/533.18
  6. Step 6: Final answer
    x = 779.59

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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.