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Finding the Fourth Proportional to 27.99, 38.58 and 22.83

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Solution

The fourth proportional to 27.99, 38.58 and 22.83 is: 31.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27.99 : 38.58 = 22.83 : x
  2. Step 2: Convert to fraction form
    27.99/38.58 = 22.83/x
  3. Step 3: Cross multiply
    27.99x = 38.58 × 22.83
  4. Step 4: Simplify right side
    27.99x = 880.78
  5. Step 5: Solve for x
    x = 880.78/27.99
  6. Step 6: Final answer
    x = 31.47

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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.