Home / 315.32-435-222.20

Finding the Fourth Proportional to 315.32, 435 and 222.20

Calculator

Solution

The fourth proportional to 315.32, 435 and 222.20 is: 306.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    315.32 : 435 = 222.20 : x
  2. Step 2: Convert to fraction form
    315.32/435 = 222.20/x
  3. Step 3: Cross multiply
    315.32x = 435 × 222.20
  4. Step 4: Simplify right side
    315.32x = 96,657
  5. Step 5: Solve for x
    x = 96,657/315.32
  6. Step 6: Final answer
    x = 306.54

Related Problems

Find fourth proportional to 157.66, 217.50 and 111.10
Half scale
Find fourth proportional to 630.64, 870 and 444.40
Double scale
Find fourth proportional to 316.32, 436.38 and 223.20
Similar ratio
Find fourth proportional to 472.98, 652.50 and 333.30
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.