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Finding the Fourth Proportional to 373.91, 515.97 and 216.57

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Solution

The fourth proportional to 373.91, 515.97 and 216.57 is: 298.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.91 : 515.97 = 216.57 : x
  2. Step 2: Convert to fraction form
    373.91/515.97 = 216.57/x
  3. Step 3: Cross multiply
    373.91x = 515.97 × 216.57
  4. Step 4: Simplify right side
    373.91x = 111,743.62
  5. Step 5: Solve for x
    x = 111,743.62/373.91
  6. Step 6: Final answer
    x = 298.85

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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.