Home / 770.28-1,155.12-283.20

Finding the Fourth Proportional to 770.28, 1,155.12 and 283.20

Calculator

Solution

The fourth proportional to 770.28, 1,155.12 and 283.20 is: 424.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    770.28 : 1,155.12 = 283.20 : x
  2. Step 2: Convert to fraction form
    770.28/1,155.12 = 283.20/x
  3. Step 3: Cross multiply
    770.28x = 1,155.12 × 283.20
  4. Step 4: Simplify right side
    770.28x = 327,129.98
  5. Step 5: Solve for x
    x = 327,129.98/770.28
  6. Step 6: Final answer
    x = 424.69

Related Problems

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.