Home / 680-1,020-167

Finding the Fourth Proportional to 680, 1,020 and 167

Calculator

Solution

The fourth proportional to 680, 1,020 and 167 is: 250.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    680 : 1,020 = 167 : x
  2. Step 2: Convert to fraction form
    680/1,020 = 167/x
  3. Step 3: Cross multiply
    680x = 1,020 × 167
  4. Step 4: Simplify right side
    680x = 170,340
  5. Step 5: Solve for x
    x = 170,340/680
  6. Step 6: Final answer
    x = 250.50

Related Problems

Find fourth proportional to 340, 510 and 83.50
Half scale
Find fourth proportional to 1,360, 2,040 and 334
Double scale
Find fourth proportional to 681, 1,021.50 and 168
Similar ratio
Find fourth proportional to 1,020, 1,530 and 250.50
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.