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Finding the Fourth Proportional to 622.75, 933.55 and 276.15

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Solution

The fourth proportional to 622.75, 933.55 and 276.15 is: 413.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.75 : 933.55 = 276.15 : x
  2. Step 2: Convert to fraction form
    622.75/933.55 = 276.15/x
  3. Step 3: Cross multiply
    622.75x = 933.55 × 276.15
  4. Step 4: Simplify right side
    622.75x = 257,800.52
  5. Step 5: Solve for x
    x = 257,800.52/622.75
  6. Step 6: Final answer
    x = 413.97

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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.