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Finding the Fourth Proportional to 575.16, 793.61 and 397.85

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Solution

The fourth proportional to 575.16, 793.61 and 397.85 is: 548.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.16 : 793.61 = 397.85 : x
  2. Step 2: Convert to fraction form
    575.16/793.61 = 397.85/x
  3. Step 3: Cross multiply
    575.16x = 793.61 × 397.85
  4. Step 4: Simplify right side
    575.16x = 315,733.27
  5. Step 5: Solve for x
    x = 315,733.27/575.16
  6. Step 6: Final answer
    x = 548.95

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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.