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Finding the Fourth Proportional to 374.61, 516.91 and 208.83

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Solution

The fourth proportional to 374.61, 516.91 and 208.83 is: 288.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    374.61 : 516.91 = 208.83 : x
  2. Step 2: Convert to fraction form
    374.61/516.91 = 208.83/x
  3. Step 3: Cross multiply
    374.61x = 516.91 × 208.83
  4. Step 4: Simplify right side
    374.61x = 107,946.32
  5. Step 5: Solve for x
    x = 107,946.32/374.61
  6. Step 6: Final answer
    x = 288.16

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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.