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Finding the Fourth Proportional to 184.42, 276.63 and 103.78

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Solution

The fourth proportional to 184.42, 276.63 and 103.78 is: 155.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.42 : 276.63 = 103.78 : x
  2. Step 2: Convert to fraction form
    184.42/276.63 = 103.78/x
  3. Step 3: Cross multiply
    184.42x = 276.63 × 103.78
  4. Step 4: Simplify right side
    184.42x = 28,708.66
  5. Step 5: Solve for x
    x = 28,708.66/184.42
  6. Step 6: Final answer
    x = 155.67

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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.