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Finding the Fourth Proportional to 18.63, 25.82 and 18.27

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Solution

The fourth proportional to 18.63, 25.82 and 18.27 is: 25.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.63 : 25.82 = 18.27 : x
  2. Step 2: Convert to fraction form
    18.63/25.82 = 18.27/x
  3. Step 3: Cross multiply
    18.63x = 25.82 × 18.27
  4. Step 4: Simplify right side
    18.63x = 471.64
  5. Step 5: Solve for x
    x = 471.64/18.63
  6. Step 6: Final answer
    x = 25.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.