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Finding the Fourth Proportional to 243.34, 335.43 and 190.76

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Solution

The fourth proportional to 243.34, 335.43 and 190.76 is: 262.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.34 : 335.43 = 190.76 : x
  2. Step 2: Convert to fraction form
    243.34/335.43 = 190.76/x
  3. Step 3: Cross multiply
    243.34x = 335.43 × 190.76
  4. Step 4: Simplify right side
    243.34x = 63,986.63
  5. Step 5: Solve for x
    x = 63,986.63/243.34
  6. Step 6: Final answer
    x = 262.95

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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.