Home / 1,025.60-1,538.32-295.20

Finding the Fourth Proportional to 1,025.60, 1,538.32 and 295.20

Calculator

Solution

The fourth proportional to 1,025.60, 1,538.32 and 295.20 is: 442.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.60 : 1,538.32 = 295.20 : x
  2. Step 2: Convert to fraction form
    1,025.60/1,538.32 = 295.20/x
  3. Step 3: Cross multiply
    1,025.60x = 1,538.32 × 295.20
  4. Step 4: Simplify right side
    1,025.60x = 454,112.06
  5. Step 5: Solve for x
    x = 454,112.06/1,025.60
  6. Step 6: Final answer
    x = 442.78

Related Problems

Find fourth proportional to 512.80, 769.16 and 147.60
Half scale
Find fourth proportional to 2,051.20, 3,076.64 and 590.40
Double scale
Find fourth proportional to 1,026.60, 1,539.82 and 296.20
Similar ratio
Find fourth proportional to 1,538.40, 2,307.48 and 442.80
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.