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Finding the Fourth Proportional to 243.71, 335.75 and 190.65

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Solution

The fourth proportional to 243.71, 335.75 and 190.65 is: 262.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.71 : 335.75 = 190.65 : x
  2. Step 2: Convert to fraction form
    243.71/335.75 = 190.65/x
  3. Step 3: Cross multiply
    243.71x = 335.75 × 190.65
  4. Step 4: Simplify right side
    243.71x = 64,011.04
  5. Step 5: Solve for x
    x = 64,011.04/243.71
  6. Step 6: Final answer
    x = 262.65

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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.