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Finding the Fourth Proportional to 262.32, 361.62 and 203.40

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Solution

The fourth proportional to 262.32, 361.62 and 203.40 is: 280.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.32 : 361.62 = 203.40 : x
  2. Step 2: Convert to fraction form
    262.32/361.62 = 203.40/x
  3. Step 3: Cross multiply
    262.32x = 361.62 × 203.40
  4. Step 4: Simplify right side
    262.32x = 73,553.51
  5. Step 5: Solve for x
    x = 73,553.51/262.32
  6. Step 6: Final answer
    x = 280.40

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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.