Home / 770.46-1,063.32-438.90

Finding the Fourth Proportional to 770.46, 1,063.32 and 438.90

Calculator

Solution

The fourth proportional to 770.46, 1,063.32 and 438.90 is: 605.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    770.46 : 1,063.32 = 438.90 : x
  2. Step 2: Convert to fraction form
    770.46/1,063.32 = 438.90/x
  3. Step 3: Cross multiply
    770.46x = 1,063.32 × 438.90
  4. Step 4: Simplify right side
    770.46x = 466,691.15
  5. Step 5: Solve for x
    x = 466,691.15/770.46
  6. Step 6: Final answer
    x = 605.73

Related Problems

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.