Home / 244.35-366.39-128.72

Finding the Fourth Proportional to 244.35, 366.39 and 128.72

Calculator

Solution

The fourth proportional to 244.35, 366.39 and 128.72 is: 193.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.35 : 366.39 = 128.72 : x
  2. Step 2: Convert to fraction form
    244.35/366.39 = 128.72/x
  3. Step 3: Cross multiply
    244.35x = 366.39 × 128.72
  4. Step 4: Simplify right side
    244.35x = 47,162.64
  5. Step 5: Solve for x
    x = 47,162.64/244.35
  6. Step 6: Final answer
    x = 193.01

Related Problems

Find fourth proportional to 122.18, 183.20 and 64.36
Half scale
Find fourth proportional to 488.70, 732.78 and 257.45
Double scale
Find fourth proportional to 245.35, 367.89 and 129.72
Similar ratio
Find fourth proportional to 366.53, 549.59 and 193.08
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.