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Finding the Fourth Proportional to 304.85, 457.20 and 122.24

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Solution

The fourth proportional to 304.85, 457.20 and 122.24 is: 183.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.85 : 457.20 = 122.24 : x
  2. Step 2: Convert to fraction form
    304.85/457.20 = 122.24/x
  3. Step 3: Cross multiply
    304.85x = 457.20 × 122.24
  4. Step 4: Simplify right side
    304.85x = 55,885.84
  5. Step 5: Solve for x
    x = 55,885.84/304.85
  6. Step 6: Final answer
    x = 183.33

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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.