Home / 556-768-511.60

Finding the Fourth Proportional to 556, 768 and 511.60

Calculator

Solution

The fourth proportional to 556, 768 and 511.60 is: 706.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    556 : 768 = 511.60 : x
  2. Step 2: Convert to fraction form
    556/768 = 511.60/x
  3. Step 3: Cross multiply
    556x = 768 × 511.60
  4. Step 4: Simplify right side
    556x = 392,908.80
  5. Step 5: Solve for x
    x = 392,908.80/556
  6. Step 6: Final answer
    x = 706.67

Related Problems

Find fourth proportional to 278, 384 and 255.80
Half scale
Find fourth proportional to 1,112, 1,536 and 1,023.20
Double scale
Find fourth proportional to 557, 769.38 and 512.60
Similar ratio
Find fourth proportional to 834, 1,152 and 767.40
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.