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Finding the Fourth Proportional to 374.59, 516.92 and 208.81

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Solution

The fourth proportional to 374.59, 516.92 and 208.81 is: 288.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.59 : 516.92 = 208.81 : x
  2. Step 2: Convert to fraction form
    374.59/516.92 = 208.81/x
  3. Step 3: Cross multiply
    374.59x = 516.92 × 208.81
  4. Step 4: Simplify right side
    374.59x = 107,934.44
  5. Step 5: Solve for x
    x = 107,934.44/374.59
  6. Step 6: Final answer
    x = 288.14

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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.