Home / 1,118.30-1,677.36-377.90

Finding the Fourth Proportional to 1,118.30, 1,677.36 and 377.90

Calculator

Solution

The fourth proportional to 1,118.30, 1,677.36 and 377.90 is: 566.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.30 : 1,677.36 = 377.90 : x
  2. Step 2: Convert to fraction form
    1,118.30/1,677.36 = 377.90/x
  3. Step 3: Cross multiply
    1,118.30x = 1,677.36 × 377.90
  4. Step 4: Simplify right side
    1,118.30x = 633,865.96
  5. Step 5: Solve for x
    x = 633,865.96/1,118.30
  6. Step 6: Final answer
    x = 566.81

Related Problems

Find fourth proportional to 559.15, 838.68 and 188.95
Half scale
Find fourth proportional to 2,236.61, 3,354.72 and 755.79
Double scale
Find fourth proportional to 1,119.30, 1,678.86 and 378.90
Similar ratio
Find fourth proportional to 1,677.45, 2,516.04 and 566.84
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.