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Finding the Fourth Proportional to 53.56, 73.43 and 49.54

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Solution

The fourth proportional to 53.56, 73.43 and 49.54 is: 67.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.56 : 73.43 = 49.54 : x
  2. Step 2: Convert to fraction form
    53.56/73.43 = 49.54/x
  3. Step 3: Cross multiply
    53.56x = 73.43 × 49.54
  4. Step 4: Simplify right side
    53.56x = 3,637.72
  5. Step 5: Solve for x
    x = 3,637.72/53.56
  6. Step 6: Final answer
    x = 67.92

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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.