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Finding the Fourth Proportional to 262.40, 362.24 and 164.21

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Solution

The fourth proportional to 262.40, 362.24 and 164.21 is: 226.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.40 : 362.24 = 164.21 : x
  2. Step 2: Convert to fraction form
    262.40/362.24 = 164.21/x
  3. Step 3: Cross multiply
    262.40x = 362.24 × 164.21
  4. Step 4: Simplify right side
    262.40x = 59,480.80
  5. Step 5: Solve for x
    x = 59,480.80/262.40
  6. Step 6: Final answer
    x = 226.68

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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.