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Finding the Fourth Proportional to 262.13, 391.15 and 234.80

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Solution

The fourth proportional to 262.13, 391.15 and 234.80 is: 350.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.13 : 391.15 = 234.80 : x
  2. Step 2: Convert to fraction form
    262.13/391.15 = 234.80/x
  3. Step 3: Cross multiply
    262.13x = 391.15 × 234.80
  4. Step 4: Simplify right side
    262.13x = 91,839.48
  5. Step 5: Solve for x
    x = 91,839.48/262.13
  6. Step 6: Final answer
    x = 350.37

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.