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Finding the Fourth Proportional to 22.60, 34.07 and 21.29

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Solution

The fourth proportional to 22.60, 34.07 and 21.29 is: 32.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.60 : 34.07 = 21.29 : x
  2. Step 2: Convert to fraction form
    22.60/34.07 = 21.29/x
  3. Step 3: Cross multiply
    22.60x = 34.07 × 21.29
  4. Step 4: Simplify right side
    22.60x = 725.35
  5. Step 5: Solve for x
    x = 725.35/22.60
  6. Step 6: Final answer
    x = 32.10

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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.