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Finding the Fourth Proportional to 22.57, 31.36 and 22.36

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Solution

The fourth proportional to 22.57, 31.36 and 22.36 is: 31.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22.57 : 31.36 = 22.36 : x
  2. Step 2: Convert to fraction form
    22.57/31.36 = 22.36/x
  3. Step 3: Cross multiply
    22.57x = 31.36 × 22.36
  4. Step 4: Simplify right side
    22.57x = 701.21
  5. Step 5: Solve for x
    x = 701.21/22.57
  6. Step 6: Final answer
    x = 31.07

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.