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Finding the Fourth Proportional to 451.68, 676.76 and 400.04

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Solution

The fourth proportional to 451.68, 676.76 and 400.04 is: 599.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.68 : 676.76 = 400.04 : x
  2. Step 2: Convert to fraction form
    451.68/676.76 = 400.04/x
  3. Step 3: Cross multiply
    451.68x = 676.76 × 400.04
  4. Step 4: Simplify right side
    451.68x = 270,728.22
  5. Step 5: Solve for x
    x = 270,728.22/451.68
  6. Step 6: Final answer
    x = 599.39

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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.