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Finding the Fourth Proportional to 575.11, 793.29 and 378.55

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Solution

The fourth proportional to 575.11, 793.29 and 378.55 is: 522.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.11 : 793.29 = 378.55 : x
  2. Step 2: Convert to fraction form
    575.11/793.29 = 378.55/x
  3. Step 3: Cross multiply
    575.11x = 793.29 × 378.55
  4. Step 4: Simplify right side
    575.11x = 300,299.93
  5. Step 5: Solve for x
    x = 300,299.93/575.11
  6. Step 6: Final answer
    x = 522.16

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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.