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Finding the Fourth Proportional to 341.98, 513.05 and 136.55

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Solution

The fourth proportional to 341.98, 513.05 and 136.55 is: 204.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.98 : 513.05 = 136.55 : x
  2. Step 2: Convert to fraction form
    341.98/513.05 = 136.55/x
  3. Step 3: Cross multiply
    341.98x = 513.05 × 136.55
  4. Step 4: Simplify right side
    341.98x = 70,057.58
  5. Step 5: Solve for x
    x = 70,057.58/341.98
  6. Step 6: Final answer
    x = 204.86

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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.