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Finding the Fourth Proportional to 36.46, 54.60 and 30.74

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Solution

The fourth proportional to 36.46, 54.60 and 30.74 is: 46.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    36.46 : 54.60 = 30.74 : x
  2. Step 2: Convert to fraction form
    36.46/54.60 = 30.74/x
  3. Step 3: Cross multiply
    36.46x = 54.60 × 30.74
  4. Step 4: Simplify right side
    36.46x = 1,678.40
  5. Step 5: Solve for x
    x = 1,678.40/36.46
  6. Step 6: Final answer
    x = 46.03

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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.