Home / 340-510-112

Finding the Fourth Proportional to 340, 510 and 112

Calculator

Solution

The fourth proportional to 340, 510 and 112 is: 168

Step by Step Solution

  1. Step 1: Write the proportion equation
    340 : 510 = 112 : x
  2. Step 2: Convert to fraction form
    340/510 = 112/x
  3. Step 3: Cross multiply
    340x = 510 × 112
  4. Step 4: Simplify right side
    340x = 57,120
  5. Step 5: Solve for x
    x = 57,120/340
  6. Step 6: Final answer
    x = 168

Related Problems

Find fourth proportional to 170, 255 and 56
Half scale
Find fourth proportional to 680, 1,020 and 224
Double scale
Find fourth proportional to 341, 511.50 and 113
Similar ratio
Find fourth proportional to 510, 765 and 168
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.