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Finding the Fourth Proportional to 55.46, 82.72 and 54.26

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Solution

The fourth proportional to 55.46, 82.72 and 54.26 is: 80.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.46 : 82.72 = 54.26 : x
  2. Step 2: Convert to fraction form
    55.46/82.72 = 54.26/x
  3. Step 3: Cross multiply
    55.46x = 82.72 × 54.26
  4. Step 4: Simplify right side
    55.46x = 4,488.39
  5. Step 5: Solve for x
    x = 4,488.39/55.46
  6. Step 6: Final answer
    x = 80.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.