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Finding the Fourth Proportional to 341.39, 470.72 and 274.97

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Solution

The fourth proportional to 341.39, 470.72 and 274.97 is: 379.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.39 : 470.72 = 274.97 : x
  2. Step 2: Convert to fraction form
    341.39/470.72 = 274.97/x
  3. Step 3: Cross multiply
    341.39x = 470.72 × 274.97
  4. Step 4: Simplify right side
    341.39x = 129,432.21
  5. Step 5: Solve for x
    x = 129,432.21/341.39
  6. Step 6: Final answer
    x = 379.14

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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.