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Finding the Fourth Proportional to 373.99, 516.13 and 216.65

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Solution

The fourth proportional to 373.99, 516.13 and 216.65 is: 298.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.99 : 516.13 = 216.65 : x
  2. Step 2: Convert to fraction form
    373.99/516.13 = 216.65/x
  3. Step 3: Cross multiply
    373.99x = 516.13 × 216.65
  4. Step 4: Simplify right side
    373.99x = 111,819.56
  5. Step 5: Solve for x
    x = 111,819.56/373.99
  6. Step 6: Final answer
    x = 298.99

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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.