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Finding the Fourth Proportional to 36.62, 50.54 and 21.08

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Solution

The fourth proportional to 36.62, 50.54 and 21.08 is: 29.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.62 : 50.54 = 21.08 : x
  2. Step 2: Convert to fraction form
    36.62/50.54 = 21.08/x
  3. Step 3: Cross multiply
    36.62x = 50.54 × 21.08
  4. Step 4: Simplify right side
    36.62x = 1,065.40
  5. Step 5: Solve for x
    x = 1,065.40/36.62
  6. Step 6: Final answer
    x = 29.09

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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.