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Finding the Fourth Proportional to 25.84, 35.56 and 22.38

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Solution

The fourth proportional to 25.84, 35.56 and 22.38 is: 30.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    25.84 : 35.56 = 22.38 : x
  2. Step 2: Convert to fraction form
    25.84/35.56 = 22.38/x
  3. Step 3: Cross multiply
    25.84x = 35.56 × 22.38
  4. Step 4: Simplify right side
    25.84x = 795.83
  5. Step 5: Solve for x
    x = 795.83/25.84
  6. Step 6: Final answer
    x = 30.80

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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.