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Finding the Fourth Proportional to 32.92, 45.43 and 18.36

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Solution

The fourth proportional to 32.92, 45.43 and 18.36 is: 25.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    32.92 : 45.43 = 18.36 : x
  2. Step 2: Convert to fraction form
    32.92/45.43 = 18.36/x
  3. Step 3: Cross multiply
    32.92x = 45.43 × 18.36
  4. Step 4: Simplify right side
    32.92x = 834.05
  5. Step 5: Solve for x
    x = 834.05/32.92
  6. Step 6: Final answer
    x = 25.34

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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.