Home / 1,518.49-2,277.31-422.61

Finding the Fourth Proportional to 1,518.49, 2,277.31 and 422.61

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Solution

The fourth proportional to 1,518.49, 2,277.31 and 422.61 is: 633.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.49 : 2,277.31 = 422.61 : x
  2. Step 2: Convert to fraction form
    1,518.49/2,277.31 = 422.61/x
  3. Step 3: Cross multiply
    1,518.49x = 2,277.31 × 422.61
  4. Step 4: Simplify right side
    1,518.49x = 962,413.98
  5. Step 5: Solve for x
    x = 962,413.98/1,518.49
  6. Step 6: Final answer
    x = 633.80

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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.