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Finding the Fourth Proportional to 29.84, 41.21 and 22.55

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Solution

The fourth proportional to 29.84, 41.21 and 22.55 is: 31.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    29.84 : 41.21 = 22.55 : x
  2. Step 2: Convert to fraction form
    29.84/41.21 = 22.55/x
  3. Step 3: Cross multiply
    29.84x = 41.21 × 22.55
  4. Step 4: Simplify right side
    29.84x = 929.29
  5. Step 5: Solve for x
    x = 929.29/29.84
  6. Step 6: Final answer
    x = 31.14

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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.