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Finding the Fourth Proportional to 30.13, 41.61 and 19.22

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Solution

The fourth proportional to 30.13, 41.61 and 19.22 is: 26.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30.13 : 41.61 = 19.22 : x
  2. Step 2: Convert to fraction form
    30.13/41.61 = 19.22/x
  3. Step 3: Cross multiply
    30.13x = 41.61 × 19.22
  4. Step 4: Simplify right side
    30.13x = 799.74
  5. Step 5: Solve for x
    x = 799.74/30.13
  6. Step 6: Final answer
    x = 26.54

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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.