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Finding the Fourth Proportional to 373.98, 516.08 and 208.20

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Solution

The fourth proportional to 373.98, 516.08 and 208.20 is: 287.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.98 : 516.08 = 208.20 : x
  2. Step 2: Convert to fraction form
    373.98/516.08 = 208.20/x
  3. Step 3: Cross multiply
    373.98x = 516.08 × 208.20
  4. Step 4: Simplify right side
    373.98x = 107,447.86
  5. Step 5: Solve for x
    x = 107,447.86/373.98
  6. Step 6: Final answer
    x = 287.31

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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.