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Finding the Fourth Proportional to 19.06, 26.15 and 18.55

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Solution

The fourth proportional to 19.06, 26.15 and 18.55 is: 25.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19.06 : 26.15 = 18.55 : x
  2. Step 2: Convert to fraction form
    19.06/26.15 = 18.55/x
  3. Step 3: Cross multiply
    19.06x = 26.15 × 18.55
  4. Step 4: Simplify right side
    19.06x = 485.08
  5. Step 5: Solve for x
    x = 485.08/19.06
  6. Step 6: Final answer
    x = 25.45

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.