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Finding the Fourth Proportional to 341.36, 512.04 and 84.86

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Solution

The fourth proportional to 341.36, 512.04 and 84.86 is: 127.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.36 : 512.04 = 84.86 : x
  2. Step 2: Convert to fraction form
    341.36/512.04 = 84.86/x
  3. Step 3: Cross multiply
    341.36x = 512.04 × 84.86
  4. Step 4: Simplify right side
    341.36x = 43,448.73
  5. Step 5: Solve for x
    x = 43,448.73/341.36
  6. Step 6: Final answer
    x = 127.28

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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.