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Finding the Fourth Proportional to 533.84, 799.08 and 521.36

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Solution

The fourth proportional to 533.84, 799.08 and 521.36 is: 780.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.84 : 799.08 = 521.36 : x
  2. Step 2: Convert to fraction form
    533.84/799.08 = 521.36/x
  3. Step 3: Cross multiply
    533.84x = 799.08 × 521.36
  4. Step 4: Simplify right side
    533.84x = 416,608.35
  5. Step 5: Solve for x
    x = 416,608.35/533.84
  6. Step 6: Final answer
    x = 780.40

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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.