Home / 450.51-680-450.51

Finding the Fourth Proportional to 450.51, 680 and 450.51

Calculator

Solution

The fourth proportional to 450.51, 680 and 450.51 is: 680

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.51 : 680 = 450.51 : x
  2. Step 2: Convert to fraction form
    450.51/680 = 450.51/x
  3. Step 3: Cross multiply
    450.51x = 680 × 450.51
  4. Step 4: Simplify right side
    450.51x = 306,346.80
  5. Step 5: Solve for x
    x = 306,346.80/450.51
  6. Step 6: Final answer
    x = 680

Related Problems

Find fourth proportional to 225.26, 340 and 225.26
Half scale
Find fourth proportional to 901.02, 1,360 and 901.02
Double scale
Find fourth proportional to 451.51, 681.51 and 451.51
Similar ratio
Find fourth proportional to 675.77, 1,020 and 675.77
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.