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Finding the Fourth Proportional to 574.26, 792.72 and 388.41

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Solution

The fourth proportional to 574.26, 792.72 and 388.41 is: 536.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.26 : 792.72 = 388.41 : x
  2. Step 2: Convert to fraction form
    574.26/792.72 = 388.41/x
  3. Step 3: Cross multiply
    574.26x = 792.72 × 388.41
  4. Step 4: Simplify right side
    574.26x = 307,900.38
  5. Step 5: Solve for x
    x = 307,900.38/574.26
  6. Step 6: Final answer
    x = 536.17

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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.