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Finding the Fourth Proportional to 304.74, 456.78 and 122.07

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Solution

The fourth proportional to 304.74, 456.78 and 122.07 is: 182.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.74 : 456.78 = 122.07 : x
  2. Step 2: Convert to fraction form
    304.74/456.78 = 122.07/x
  3. Step 3: Cross multiply
    304.74x = 456.78 × 122.07
  4. Step 4: Simplify right side
    304.74x = 55,759.13
  5. Step 5: Solve for x
    x = 55,759.13/304.74
  6. Step 6: Final answer
    x = 182.97

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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.