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Finding the Fourth Proportional to 623.38, 933.96 and 379.78

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Solution

The fourth proportional to 623.38, 933.96 and 379.78 is: 568.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    623.38 : 933.96 = 379.78 : x
  2. Step 2: Convert to fraction form
    623.38/933.96 = 379.78/x
  3. Step 3: Cross multiply
    623.38x = 933.96 × 379.78
  4. Step 4: Simplify right side
    623.38x = 354,699.33
  5. Step 5: Solve for x
    x = 354,699.33/623.38
  6. Step 6: Final answer
    x = 568.99

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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.