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Finding the Fourth Proportional to 262.51, 361.26 and 239.22

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Solution

The fourth proportional to 262.51, 361.26 and 239.22 is: 329.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.51 : 361.26 = 239.22 : x
  2. Step 2: Convert to fraction form
    262.51/361.26 = 239.22/x
  3. Step 3: Cross multiply
    262.51x = 361.26 × 239.22
  4. Step 4: Simplify right side
    262.51x = 86,420.62
  5. Step 5: Solve for x
    x = 86,420.62/262.51
  6. Step 6: Final answer
    x = 329.21

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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.