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Finding the Fourth Proportional to 262.26, 394.95 and 228.43

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Solution

The fourth proportional to 262.26, 394.95 and 228.43 is: 344.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.26 : 394.95 = 228.43 : x
  2. Step 2: Convert to fraction form
    262.26/394.95 = 228.43/x
  3. Step 3: Cross multiply
    262.26x = 394.95 × 228.43
  4. Step 4: Simplify right side
    262.26x = 90,219.37
  5. Step 5: Solve for x
    x = 90,219.37/262.26
  6. Step 6: Final answer
    x = 344.01

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.