Home / 1,327.66-1,991.50-450

Finding the Fourth Proportional to 1,327.66, 1,991.50 and 450

Calculator

Solution

The fourth proportional to 1,327.66, 1,991.50 and 450 is: 675.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.66 : 1,991.50 = 450 : x
  2. Step 2: Convert to fraction form
    1,327.66/1,991.50 = 450/x
  3. Step 3: Cross multiply
    1,327.66x = 1,991.50 × 450
  4. Step 4: Simplify right side
    1,327.66x = 896,175
  5. Step 5: Solve for x
    x = 896,175/1,327.66
  6. Step 6: Final answer
    x = 675.00

Related Problems

Find fourth proportional to 663.83, 995.75 and 225
Half scale
Find fourth proportional to 2,655.32, 3,983 and 900
Double scale
Find fourth proportional to 1,328.66, 1,993 and 451
Similar ratio
Find fourth proportional to 1,991.49, 2,987.25 and 675
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.