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Finding the Fourth Proportional to 19.25, 29.04 and 18.55

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Solution

The fourth proportional to 19.25, 29.04 and 18.55 is: 27.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19.25 : 29.04 = 18.55 : x
  2. Step 2: Convert to fraction form
    19.25/29.04 = 18.55/x
  3. Step 3: Cross multiply
    19.25x = 29.04 × 18.55
  4. Step 4: Simplify right side
    19.25x = 538.69
  5. Step 5: Solve for x
    x = 538.69/19.25
  6. Step 6: Final answer
    x = 27.98

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.