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Finding the Fourth Proportional to 340.11, 470.09 and 300.49

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Solution

The fourth proportional to 340.11, 470.09 and 300.49 is: 415.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.11 : 470.09 = 300.49 : x
  2. Step 2: Convert to fraction form
    340.11/470.09 = 300.49/x
  3. Step 3: Cross multiply
    340.11x = 470.09 × 300.49
  4. Step 4: Simplify right side
    340.11x = 141,256.92
  5. Step 5: Solve for x
    x = 141,256.92/340.11
  6. Step 6: Final answer
    x = 415.33

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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.