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Finding the Fourth Proportional to 262.76, 393.71 and 230.09

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Solution

The fourth proportional to 262.76, 393.71 and 230.09 is: 344.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.76 : 393.71 = 230.09 : x
  2. Step 2: Convert to fraction form
    262.76/393.71 = 230.09/x
  3. Step 3: Cross multiply
    262.76x = 393.71 × 230.09
  4. Step 4: Simplify right side
    262.76x = 90,585.61
  5. Step 5: Solve for x
    x = 90,585.61/262.76
  6. Step 6: Final answer
    x = 344.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.