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Finding the Fourth Proportional to 26.56, 40.03 and 21.25

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Solution

The fourth proportional to 26.56, 40.03 and 21.25 is: 32.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    26.56 : 40.03 = 21.25 : x
  2. Step 2: Convert to fraction form
    26.56/40.03 = 21.25/x
  3. Step 3: Cross multiply
    26.56x = 40.03 × 21.25
  4. Step 4: Simplify right side
    26.56x = 850.64
  5. Step 5: Solve for x
    x = 850.64/26.56
  6. Step 6: Final answer
    x = 32.03

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.