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Finding the Fourth Proportional to 533.18, 799.67 and 520.09

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Solution

The fourth proportional to 533.18, 799.67 and 520.09 is: 780.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.18 : 799.67 = 520.09 : x
  2. Step 2: Convert to fraction form
    533.18/799.67 = 520.09/x
  3. Step 3: Cross multiply
    533.18x = 799.67 × 520.09
  4. Step 4: Simplify right side
    533.18x = 415,899.67
  5. Step 5: Solve for x
    x = 415,899.67/533.18
  6. Step 6: Final answer
    x = 780.03

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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.