Home / 827.84-1,142.57-478.73

Finding the Fourth Proportional to 827.84, 1,142.57 and 478.73

Calculator

Solution

The fourth proportional to 827.84, 1,142.57 and 478.73 is: 660.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.84 : 1,142.57 = 478.73 : x
  2. Step 2: Convert to fraction form
    827.84/1,142.57 = 478.73/x
  3. Step 3: Cross multiply
    827.84x = 1,142.57 × 478.73
  4. Step 4: Simplify right side
    827.84x = 546,982.54
  5. Step 5: Solve for x
    x = 546,982.54/827.84
  6. Step 6: Final answer
    x = 660.73

Related Problems

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.