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Finding the Fourth Proportional to 341.09, 470.78 and 201.21

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Solution

The fourth proportional to 341.09, 470.78 and 201.21 is: 277.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.09 : 470.78 = 201.21 : x
  2. Step 2: Convert to fraction form
    341.09/470.78 = 201.21/x
  3. Step 3: Cross multiply
    341.09x = 470.78 × 201.21
  4. Step 4: Simplify right side
    341.09x = 94,726.15
  5. Step 5: Solve for x
    x = 94,726.15/341.09
  6. Step 6: Final answer
    x = 277.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.