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Finding the Fourth Proportional to 573.44, 789.29 and 479.12

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Solution

The fourth proportional to 573.44, 789.29 and 479.12 is: 659.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.44 : 789.29 = 479.12 : x
  2. Step 2: Convert to fraction form
    573.44/789.29 = 479.12/x
  3. Step 3: Cross multiply
    573.44x = 789.29 × 479.12
  4. Step 4: Simplify right side
    573.44x = 378,158.28
  5. Step 5: Solve for x
    x = 378,158.28/573.44
  6. Step 6: Final answer
    x = 659.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.