Home / 238.72-330-229

Finding the Fourth Proportional to 238.72, 330 and 229

Calculator

Solution

The fourth proportional to 238.72, 330 and 229 is: 316.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.72 : 330 = 229 : x
  2. Step 2: Convert to fraction form
    238.72/330 = 229/x
  3. Step 3: Cross multiply
    238.72x = 330 × 229
  4. Step 4: Simplify right side
    238.72x = 75,570
  5. Step 5: Solve for x
    x = 75,570/238.72
  6. Step 6: Final answer
    x = 316.56

Related Problems

Find fourth proportional to 119.36, 165 and 114.50
Half scale
Find fourth proportional to 477.44, 660 and 458
Double scale
Find fourth proportional to 239.72, 331.38 and 230
Similar ratio
Find fourth proportional to 358.08, 495 and 343.50
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.