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Finding the Fourth Proportional to 47.83, 71.87 and 27.56

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Solution

The fourth proportional to 47.83, 71.87 and 27.56 is: 41.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.83 : 71.87 = 27.56 : x
  2. Step 2: Convert to fraction form
    47.83/71.87 = 27.56/x
  3. Step 3: Cross multiply
    47.83x = 71.87 × 27.56
  4. Step 4: Simplify right side
    47.83x = 1,980.56
  5. Step 5: Solve for x
    x = 1,980.56/47.83
  6. Step 6: Final answer
    x = 41.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.