Home / 544.80-816.84-256.32

Finding the Fourth Proportional to 544.80, 816.84 and 256.32

Calculator

Solution

The fourth proportional to 544.80, 816.84 and 256.32 is: 384.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    544.80 : 816.84 = 256.32 : x
  2. Step 2: Convert to fraction form
    544.80/816.84 = 256.32/x
  3. Step 3: Cross multiply
    544.80x = 816.84 × 256.32
  4. Step 4: Simplify right side
    544.80x = 209,372.43
  5. Step 5: Solve for x
    x = 209,372.43/544.80
  6. Step 6: Final answer
    x = 384.31

Related Problems

Find fourth proportional to 272.40, 408.42 and 128.16
Half scale
Find fourth proportional to 1,089.60, 1,633.68 and 512.64
Double scale
Find fourth proportional to 545.80, 818.34 and 257.32
Similar ratio
Find fourth proportional to 817.20, 1,225.26 and 384.48
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.