Home / 849.61-1,274.21-438.54

Finding the Fourth Proportional to 849.61, 1,274.21 and 438.54

Calculator

Solution

The fourth proportional to 849.61, 1,274.21 and 438.54 is: 657.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    849.61 : 1,274.21 = 438.54 : x
  2. Step 2: Convert to fraction form
    849.61/1,274.21 = 438.54/x
  3. Step 3: Cross multiply
    849.61x = 1,274.21 × 438.54
  4. Step 4: Simplify right side
    849.61x = 558,792.05
  5. Step 5: Solve for x
    x = 558,792.05/849.61
  6. Step 6: Final answer
    x = 657.70

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.