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Finding the Fourth Proportional to 49.64, 68.03 and 47.96

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Solution

The fourth proportional to 49.64, 68.03 and 47.96 is: 65.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.64 : 68.03 = 47.96 : x
  2. Step 2: Convert to fraction form
    49.64/68.03 = 47.96/x
  3. Step 3: Cross multiply
    49.64x = 68.03 × 47.96
  4. Step 4: Simplify right side
    49.64x = 3,262.72
  5. Step 5: Solve for x
    x = 3,262.72/49.64
  6. Step 6: Final answer
    x = 65.73

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.