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Finding the Fourth Proportional to 262.36, 361.90 and 203.25

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Solution

The fourth proportional to 262.36, 361.90 and 203.25 is: 280.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.36 : 361.90 = 203.25 : x
  2. Step 2: Convert to fraction form
    262.36/361.90 = 203.25/x
  3. Step 3: Cross multiply
    262.36x = 361.90 × 203.25
  4. Step 4: Simplify right side
    262.36x = 73,556.18
  5. Step 5: Solve for x
    x = 73,556.18/262.36
  6. Step 6: Final answer
    x = 280.36

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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.