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Finding the Fourth Proportional to 29.90, 41.27 and 19.55

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Solution

The fourth proportional to 29.90, 41.27 and 19.55 is: 26.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.90 : 41.27 = 19.55 : x
  2. Step 2: Convert to fraction form
    29.90/41.27 = 19.55/x
  3. Step 3: Cross multiply
    29.90x = 41.27 × 19.55
  4. Step 4: Simplify right side
    29.90x = 806.83
  5. Step 5: Solve for x
    x = 806.83/29.90
  6. Step 6: Final answer
    x = 26.98

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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.