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Finding the Fourth Proportional to 262.80, 362.72 and 163.26

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Solution

The fourth proportional to 262.80, 362.72 and 163.26 is: 225.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.80 : 362.72 = 163.26 : x
  2. Step 2: Convert to fraction form
    262.80/362.72 = 163.26/x
  3. Step 3: Cross multiply
    262.80x = 362.72 × 163.26
  4. Step 4: Simplify right side
    262.80x = 59,218.08
  5. Step 5: Solve for x
    x = 59,218.08/262.80
  6. Step 6: Final answer
    x = 225.34

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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.