Home / 827.86-1,241.07-315.22

Finding the Fourth Proportional to 827.86, 1,241.07 and 315.22

Calculator

Solution

The fourth proportional to 827.86, 1,241.07 and 315.22 is: 472.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.86 : 1,241.07 = 315.22 : x
  2. Step 2: Convert to fraction form
    827.86/1,241.07 = 315.22/x
  3. Step 3: Cross multiply
    827.86x = 1,241.07 × 315.22
  4. Step 4: Simplify right side
    827.86x = 391,210.09
  5. Step 5: Solve for x
    x = 391,210.09/827.86
  6. Step 6: Final answer
    x = 472.56

Related Problems

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.