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Finding the Fourth Proportional to 184.28, 275.40 and 122.90

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Solution

The fourth proportional to 184.28, 275.40 and 122.90 is: 183.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.28 : 275.40 = 122.90 : x
  2. Step 2: Convert to fraction form
    184.28/275.40 = 122.90/x
  3. Step 3: Cross multiply
    184.28x = 275.40 × 122.90
  4. Step 4: Simplify right side
    184.28x = 33,846.05
  5. Step 5: Solve for x
    x = 33,846.05/184.28
  6. Step 6: Final answer
    x = 183.67

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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.