Home / 274.22-378-207.84

Finding the Fourth Proportional to 274.22, 378 and 207.84

Calculator

Solution

The fourth proportional to 274.22, 378 and 207.84 is: 286.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.22 : 378 = 207.84 : x
  2. Step 2: Convert to fraction form
    274.22/378 = 207.84/x
  3. Step 3: Cross multiply
    274.22x = 378 × 207.84
  4. Step 4: Simplify right side
    274.22x = 78,563.52
  5. Step 5: Solve for x
    x = 78,563.52/274.22
  6. Step 6: Final answer
    x = 286.50

Related Problems

Find fourth proportional to 137.11, 189 and 103.92
Half scale
Find fourth proportional to 548.44, 756 and 415.68
Double scale
Find fourth proportional to 275.22, 379.38 and 208.84
Similar ratio
Find fourth proportional to 411.33, 567 and 311.76
1.5x scale

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.