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Finding the Fourth Proportional to 573.62, 792.52 and 399.74

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Solution

The fourth proportional to 573.62, 792.52 and 399.74 is: 552.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.62 : 792.52 = 399.74 : x
  2. Step 2: Convert to fraction form
    573.62/792.52 = 399.74/x
  3. Step 3: Cross multiply
    573.62x = 792.52 × 399.74
  4. Step 4: Simplify right side
    573.62x = 316,796.98
  5. Step 5: Solve for x
    x = 316,796.98/573.62
  6. Step 6: Final answer
    x = 552.28

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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.