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Finding the Fourth Proportional to 374.44, 516.71 and 208.65

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Solution

The fourth proportional to 374.44, 516.71 and 208.65 is: 287.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.44 : 516.71 = 208.65 : x
  2. Step 2: Convert to fraction form
    374.44/516.71 = 208.65/x
  3. Step 3: Cross multiply
    374.44x = 516.71 × 208.65
  4. Step 4: Simplify right side
    374.44x = 107,811.54
  5. Step 5: Solve for x
    x = 107,811.54/374.44
  6. Step 6: Final answer
    x = 287.93

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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.