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Finding the Fourth Proportional to 30.75, 46.09 and 17.23

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Solution

The fourth proportional to 30.75, 46.09 and 17.23 is: 25.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30.75 : 46.09 = 17.23 : x
  2. Step 2: Convert to fraction form
    30.75/46.09 = 17.23/x
  3. Step 3: Cross multiply
    30.75x = 46.09 × 17.23
  4. Step 4: Simplify right side
    30.75x = 794.04
  5. Step 5: Solve for x
    x = 794.04/30.75
  6. Step 6: Final answer
    x = 25.82

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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.