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Finding the Fourth Proportional to 344.78, 516.08 and 188.39

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Solution

The fourth proportional to 344.78, 516.08 and 188.39 is: 281.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.78 : 516.08 = 188.39 : x
  2. Step 2: Convert to fraction form
    344.78/516.08 = 188.39/x
  3. Step 3: Cross multiply
    344.78x = 516.08 × 188.39
  4. Step 4: Simplify right side
    344.78x = 97,220.79
  5. Step 5: Solve for x
    x = 97,220.79/344.78
  6. Step 6: Final answer
    x = 281.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.