Home / 316.12-474-270.28

Finding the Fourth Proportional to 316.12, 474 and 270.28

Calculator

Solution

The fourth proportional to 316.12, 474 and 270.28 is: 405.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.12 : 474 = 270.28 : x
  2. Step 2: Convert to fraction form
    316.12/474 = 270.28/x
  3. Step 3: Cross multiply
    316.12x = 474 × 270.28
  4. Step 4: Simplify right side
    316.12x = 128,112.72
  5. Step 5: Solve for x
    x = 128,112.72/316.12
  6. Step 6: Final answer
    x = 405.27

Related Problems

Find fourth proportional to 158.06, 237 and 135.14
Half scale
Find fourth proportional to 632.24, 948 and 540.56
Double scale
Find fourth proportional to 317.12, 475.50 and 271.28
Similar ratio
Find fourth proportional to 474.18, 711 and 405.42
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.