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Finding the Fourth Proportional to 22.51, 33.79 and 14.55

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Solution

The fourth proportional to 22.51, 33.79 and 14.55 is: 21.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.51 : 33.79 = 14.55 : x
  2. Step 2: Convert to fraction form
    22.51/33.79 = 14.55/x
  3. Step 3: Cross multiply
    22.51x = 33.79 × 14.55
  4. Step 4: Simplify right side
    22.51x = 491.64
  5. Step 5: Solve for x
    x = 491.64/22.51
  6. Step 6: Final answer
    x = 21.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.