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Finding the Fourth Proportional to 341.79, 512.34 and 136.32

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Solution

The fourth proportional to 341.79, 512.34 and 136.32 is: 204.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.79 : 512.34 = 136.32 : x
  2. Step 2: Convert to fraction form
    341.79/512.34 = 136.32/x
  3. Step 3: Cross multiply
    341.79x = 512.34 × 136.32
  4. Step 4: Simplify right side
    341.79x = 69,842.19
  5. Step 5: Solve for x
    x = 69,842.19/341.79
  6. Step 6: Final answer
    x = 204.34

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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.