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Finding the Fourth Proportional to 19.02, 26.22 and 15.33

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Solution

The fourth proportional to 19.02, 26.22 and 15.33 is: 21.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19.02 : 26.22 = 15.33 : x
  2. Step 2: Convert to fraction form
    19.02/26.22 = 15.33/x
  3. Step 3: Cross multiply
    19.02x = 26.22 × 15.33
  4. Step 4: Simplify right side
    19.02x = 401.95
  5. Step 5: Solve for x
    x = 401.95/19.02
  6. Step 6: Final answer
    x = 21.13

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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.