Home / 349-523.50-121

Finding the Fourth Proportional to 349, 523.50 and 121

Calculator

Solution

The fourth proportional to 349, 523.50 and 121 is: 181.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    349 : 523.50 = 121 : x
  2. Step 2: Convert to fraction form
    349/523.50 = 121/x
  3. Step 3: Cross multiply
    349x = 523.50 × 121
  4. Step 4: Simplify right side
    349x = 63,343.50
  5. Step 5: Solve for x
    x = 63,343.50/349
  6. Step 6: Final answer
    x = 181.50

Related Problems

Find fourth proportional to 174.50, 261.75 and 60.50
Half scale
Find fourth proportional to 698, 1,047 and 242
Double scale
Find fourth proportional to 350, 525 and 122
Similar ratio
Find fourth proportional to 523.50, 785.25 and 181.50
1.5x scale

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.