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Finding the Fourth Proportional to 344.98, 517.26 and 136.49

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Solution

The fourth proportional to 344.98, 517.26 and 136.49 is: 204.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.98 : 517.26 = 136.49 : x
  2. Step 2: Convert to fraction form
    344.98/517.26 = 136.49/x
  3. Step 3: Cross multiply
    344.98x = 517.26 × 136.49
  4. Step 4: Simplify right side
    344.98x = 70,600.13
  5. Step 5: Solve for x
    x = 70,600.13/344.98
  6. Step 6: Final answer
    x = 204.65

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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.