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Finding the Fourth Proportional to 262.32, 393.35 and 108.29

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Solution

The fourth proportional to 262.32, 393.35 and 108.29 is: 162.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.32 : 393.35 = 108.29 : x
  2. Step 2: Convert to fraction form
    262.32/393.35 = 108.29/x
  3. Step 3: Cross multiply
    262.32x = 393.35 × 108.29
  4. Step 4: Simplify right side
    262.32x = 42,593.36
  5. Step 5: Solve for x
    x = 42,593.36/262.32
  6. Step 6: Final answer
    x = 162.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.