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Finding the Fourth Proportional to 54.60, 75.69 and 51.82

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Solution

The fourth proportional to 54.60, 75.69 and 51.82 is: 71.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.60 : 75.69 = 51.82 : x
  2. Step 2: Convert to fraction form
    54.60/75.69 = 51.82/x
  3. Step 3: Cross multiply
    54.60x = 75.69 × 51.82
  4. Step 4: Simplify right side
    54.60x = 3,922.26
  5. Step 5: Solve for x
    x = 3,922.26/54.60
  6. Step 6: Final answer
    x = 71.84

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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.