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Finding the Fourth Proportional to 676.22, 933.18 and 381.49

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Solution

The fourth proportional to 676.22, 933.18 and 381.49 is: 526.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.22 : 933.18 = 381.49 : x
  2. Step 2: Convert to fraction form
    676.22/933.18 = 381.49/x
  3. Step 3: Cross multiply
    676.22x = 933.18 × 381.49
  4. Step 4: Simplify right side
    676.22x = 355,996.93
  5. Step 5: Solve for x
    x = 355,996.93/676.22
  6. Step 6: Final answer
    x = 526.45

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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.