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Finding the Fourth Proportional to 53.37, 74.03 and 47.97

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Solution

The fourth proportional to 53.37, 74.03 and 47.97 is: 66.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.37 : 74.03 = 47.97 : x
  2. Step 2: Convert to fraction form
    53.37/74.03 = 47.97/x
  3. Step 3: Cross multiply
    53.37x = 74.03 × 47.97
  4. Step 4: Simplify right side
    53.37x = 3,550.98
  5. Step 5: Solve for x
    x = 3,550.98/53.37
  6. Step 6: Final answer
    x = 66.54

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.