Home / 254.54-381.05-208.98

Finding the Fourth Proportional to 254.54, 381.05 and 208.98

Calculator

Solution

The fourth proportional to 254.54, 381.05 and 208.98 is: 312.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.54 : 381.05 = 208.98 : x
  2. Step 2: Convert to fraction form
    254.54/381.05 = 208.98/x
  3. Step 3: Cross multiply
    254.54x = 381.05 × 208.98
  4. Step 4: Simplify right side
    254.54x = 79,632.74
  5. Step 5: Solve for x
    x = 79,632.74/254.54
  6. Step 6: Final answer
    x = 312.85

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.