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Finding the Fourth Proportional to 17.69, 26.53 and 4.85

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Solution

The fourth proportional to 17.69, 26.53 and 4.85 is: 7.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17.69 : 26.53 = 4.85 : x
  2. Step 2: Convert to fraction form
    17.69/26.53 = 4.85/x
  3. Step 3: Cross multiply
    17.69x = 26.53 × 4.85
  4. Step 4: Simplify right side
    17.69x = 128.62
  5. Step 5: Solve for x
    x = 128.62/17.69
  6. Step 6: Final answer
    x = 7.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.