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Finding the Fourth Proportional to 18.33, 25.50 and 18.33

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Solution

The fourth proportional to 18.33, 25.50 and 18.33 is: 25.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.33 : 25.50 = 18.33 : x
  2. Step 2: Convert to fraction form
    18.33/25.50 = 18.33/x
  3. Step 3: Cross multiply
    18.33x = 25.50 × 18.33
  4. Step 4: Simplify right side
    18.33x = 467.42
  5. Step 5: Solve for x
    x = 467.42/18.33
  6. Step 6: Final answer
    x = 25.50

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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.