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Finding the Fourth Proportional to 304.05, 419.13 and 254.91

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Solution

The fourth proportional to 304.05, 419.13 and 254.91 is: 351.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.05 : 419.13 = 254.91 : x
  2. Step 2: Convert to fraction form
    304.05/419.13 = 254.91/x
  3. Step 3: Cross multiply
    304.05x = 419.13 × 254.91
  4. Step 4: Simplify right side
    304.05x = 106,840.43
  5. Step 5: Solve for x
    x = 106,840.43/304.05
  6. Step 6: Final answer
    x = 351.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.