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Finding the Fourth Proportional to 451.01, 622.02 and 285.16

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Solution

The fourth proportional to 451.01, 622.02 and 285.16 is: 393.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.01 : 622.02 = 285.16 : x
  2. Step 2: Convert to fraction form
    451.01/622.02 = 285.16/x
  3. Step 3: Cross multiply
    451.01x = 622.02 × 285.16
  4. Step 4: Simplify right side
    451.01x = 177,375.22
  5. Step 5: Solve for x
    x = 177,375.22/451.01
  6. Step 6: Final answer
    x = 393.28

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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.