Home / 455-682.50-113

Finding the Fourth Proportional to 455, 682.50 and 113

Calculator

Solution

The fourth proportional to 455, 682.50 and 113 is: 169.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    455 : 682.50 = 113 : x
  2. Step 2: Convert to fraction form
    455/682.50 = 113/x
  3. Step 3: Cross multiply
    455x = 682.50 × 113
  4. Step 4: Simplify right side
    455x = 77,122.50
  5. Step 5: Solve for x
    x = 77,122.50/455
  6. Step 6: Final answer
    x = 169.50

Related Problems

Find fourth proportional to 227.50, 341.25 and 56.50
Half scale
Find fourth proportional to 910, 1,365 and 226
Double scale
Find fourth proportional to 456, 684 and 114
Similar ratio
Find fourth proportional to 682.50, 1,023.75 and 169.50
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.