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Finding the Fourth Proportional to 451.63, 622.28 and 304.01

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Solution

The fourth proportional to 451.63, 622.28 and 304.01 is: 418.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.63 : 622.28 = 304.01 : x
  2. Step 2: Convert to fraction form
    451.63/622.28 = 304.01/x
  3. Step 3: Cross multiply
    451.63x = 622.28 × 304.01
  4. Step 4: Simplify right side
    451.63x = 189,179.32
  5. Step 5: Solve for x
    x = 189,179.32/451.63
  6. Step 6: Final answer
    x = 418.88

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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.