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Finding the Fourth Proportional to 573.98, 792.02 and 387.87

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Solution

The fourth proportional to 573.98, 792.02 and 387.87 is: 535.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.98 : 792.02 = 387.87 : x
  2. Step 2: Convert to fraction form
    573.98/792.02 = 387.87/x
  3. Step 3: Cross multiply
    573.98x = 792.02 × 387.87
  4. Step 4: Simplify right side
    573.98x = 307,198.86
  5. Step 5: Solve for x
    x = 307,198.86/573.98
  6. Step 6: Final answer
    x = 535.21

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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.