Home / 310.68-428.40-200.01

Finding the Fourth Proportional to 310.68, 428.40 and 200.01

Calculator

Solution

The fourth proportional to 310.68, 428.40 and 200.01 is: 275.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.68 : 428.40 = 200.01 : x
  2. Step 2: Convert to fraction form
    310.68/428.40 = 200.01/x
  3. Step 3: Cross multiply
    310.68x = 428.40 × 200.01
  4. Step 4: Simplify right side
    310.68x = 85,684.28
  5. Step 5: Solve for x
    x = 85,684.28/310.68
  6. Step 6: Final answer
    x = 275.80

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.