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Finding the Fourth Proportional to 676.44, 933.36 and 381.63

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Solution

The fourth proportional to 676.44, 933.36 and 381.63 is: 526.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.44 : 933.36 = 381.63 : x
  2. Step 2: Convert to fraction form
    676.44/933.36 = 381.63/x
  3. Step 3: Cross multiply
    676.44x = 933.36 × 381.63
  4. Step 4: Simplify right side
    676.44x = 356,198.18
  5. Step 5: Solve for x
    x = 356,198.18/676.44
  6. Step 6: Final answer
    x = 526.58

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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.