Home / 261.02-360.20-161.40

Finding the Fourth Proportional to 261.02, 360.20 and 161.40

Calculator

Solution

The fourth proportional to 261.02, 360.20 and 161.40 is: 222.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.02 : 360.20 = 161.40 : x
  2. Step 2: Convert to fraction form
    261.02/360.20 = 161.40/x
  3. Step 3: Cross multiply
    261.02x = 360.20 × 161.40
  4. Step 4: Simplify right side
    261.02x = 58,136.28
  5. Step 5: Solve for x
    x = 58,136.28/261.02
  6. Step 6: Final answer
    x = 222.73

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.