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Finding the Fourth Proportional to 54.33, 81.30 and 46.74

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Solution

The fourth proportional to 54.33, 81.30 and 46.74 is: 69.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    54.33 : 81.30 = 46.74 : x
  2. Step 2: Convert to fraction form
    54.33/81.30 = 46.74/x
  3. Step 3: Cross multiply
    54.33x = 81.30 × 46.74
  4. Step 4: Simplify right side
    54.33x = 3,799.96
  5. Step 5: Solve for x
    x = 3,799.96/54.33
  6. Step 6: Final answer
    x = 69.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.