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Finding the Fourth Proportional to 26.21, 35.94 and 25.85

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Solution

The fourth proportional to 26.21, 35.94 and 25.85 is: 35.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.21 : 35.94 = 25.85 : x
  2. Step 2: Convert to fraction form
    26.21/35.94 = 25.85/x
  3. Step 3: Cross multiply
    26.21x = 35.94 × 25.85
  4. Step 4: Simplify right side
    26.21x = 928.87
  5. Step 5: Solve for x
    x = 928.87/26.21
  6. Step 6: Final answer
    x = 35.45

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.