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Finding the Fourth Proportional to 676.78, 933.96 and 366.28

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Solution

The fourth proportional to 676.78, 933.96 and 366.28 is: 505.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.78 : 933.96 = 366.28 : x
  2. Step 2: Convert to fraction form
    676.78/933.96 = 366.28/x
  3. Step 3: Cross multiply
    676.78x = 933.96 × 366.28
  4. Step 4: Simplify right side
    676.78x = 342,092.04
  5. Step 5: Solve for x
    x = 342,092.04/676.78
  6. Step 6: Final answer
    x = 505.47

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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.