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Finding the Fourth Proportional to 341.89, 512.70 and 136.69

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Solution

The fourth proportional to 341.89, 512.70 and 136.69 is: 204.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.89 : 512.70 = 136.69 : x
  2. Step 2: Convert to fraction form
    341.89/512.70 = 136.69/x
  3. Step 3: Cross multiply
    341.89x = 512.70 × 136.69
  4. Step 4: Simplify right side
    341.89x = 70,080.96
  5. Step 5: Solve for x
    x = 70,080.96/341.89
  6. Step 6: Final answer
    x = 204.98

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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.