Home / 317.27-475.56-122.21

Finding the Fourth Proportional to 317.27, 475.56 and 122.21

Calculator

Solution

The fourth proportional to 317.27, 475.56 and 122.21 is: 183.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.27 : 475.56 = 122.21 : x
  2. Step 2: Convert to fraction form
    317.27/475.56 = 122.21/x
  3. Step 3: Cross multiply
    317.27x = 475.56 × 122.21
  4. Step 4: Simplify right side
    317.27x = 58,115.81
  5. Step 5: Solve for x
    x = 58,115.81/317.27
  6. Step 6: Final answer
    x = 183.18

Related Problems

Find fourth proportional to 158.63, 237.78 and 61.10
Half scale
Find fourth proportional to 634.53, 951.12 and 244.41
Double scale
Find fourth proportional to 318.27, 477.06 and 123.21
Similar ratio
Find fourth proportional to 475.90, 713.34 and 183.31
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.