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Finding the Fourth Proportional to 676.23, 933.27 and 490.33

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Solution

The fourth proportional to 676.23, 933.27 and 490.33 is: 676.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    676.23 : 933.27 = 490.33 : x
  2. Step 2: Convert to fraction form
    676.23/933.27 = 490.33/x
  3. Step 3: Cross multiply
    676.23x = 933.27 × 490.33
  4. Step 4: Simplify right side
    676.23x = 457,610.28
  5. Step 5: Solve for x
    x = 457,610.28/676.23
  6. Step 6: Final answer
    x = 676.71

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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.