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Finding the Fourth Proportional to 340.75, 470.42 and 237.43

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Solution

The fourth proportional to 340.75, 470.42 and 237.43 is: 327.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.75 : 470.42 = 237.43 : x
  2. Step 2: Convert to fraction form
    340.75/470.42 = 237.43/x
  3. Step 3: Cross multiply
    340.75x = 470.42 × 237.43
  4. Step 4: Simplify right side
    340.75x = 111,691.82
  5. Step 5: Solve for x
    x = 111,691.82/340.75
  6. Step 6: Final answer
    x = 327.78

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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.