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Finding the Fourth Proportional to 17.22, 25.53 and 17.12

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Solution

The fourth proportional to 17.22, 25.53 and 17.12 is: 25.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.22 : 25.53 = 17.12 : x
  2. Step 2: Convert to fraction form
    17.22/25.53 = 17.12/x
  3. Step 3: Cross multiply
    17.22x = 25.53 × 17.12
  4. Step 4: Simplify right side
    17.22x = 437.07
  5. Step 5: Solve for x
    x = 437.07/17.22
  6. Step 6: Final answer
    x = 25.38

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.