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Finding the Fourth Proportional to 25.57, 35.24 and 18.19

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Solution

The fourth proportional to 25.57, 35.24 and 18.19 is: 25.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.57 : 35.24 = 18.19 : x
  2. Step 2: Convert to fraction form
    25.57/35.24 = 18.19/x
  3. Step 3: Cross multiply
    25.57x = 35.24 × 18.19
  4. Step 4: Simplify right side
    25.57x = 640.75
  5. Step 5: Solve for x
    x = 640.75/25.57
  6. Step 6: Final answer
    x = 25.06

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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.