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Finding the Fourth Proportional to 25.90, 35.66 and 23.88

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Solution

The fourth proportional to 25.90, 35.66 and 23.88 is: 32.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.90 : 35.66 = 23.88 : x
  2. Step 2: Convert to fraction form
    25.90/35.66 = 23.88/x
  3. Step 3: Cross multiply
    25.90x = 35.66 × 23.88
  4. Step 4: Simplify right side
    25.90x = 851.56
  5. Step 5: Solve for x
    x = 851.56/25.90
  6. Step 6: Final answer
    x = 32.88

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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.