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Finding the Fourth Proportional to 533.89, 799.99 and 412.45

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Solution

The fourth proportional to 533.89, 799.99 and 412.45 is: 618.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    533.89 : 799.99 = 412.45 : x
  2. Step 2: Convert to fraction form
    533.89/799.99 = 412.45/x
  3. Step 3: Cross multiply
    533.89x = 799.99 × 412.45
  4. Step 4: Simplify right side
    533.89x = 329,955.88
  5. Step 5: Solve for x
    x = 329,955.88/533.89
  6. Step 6: Final answer
    x = 618.02

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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.