Home / 558.26-770.38-309.57

Finding the Fourth Proportional to 558.26, 770.38 and 309.57

Calculator

Solution

The fourth proportional to 558.26, 770.38 and 309.57 is: 427.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.26 : 770.38 = 309.57 : x
  2. Step 2: Convert to fraction form
    558.26/770.38 = 309.57/x
  3. Step 3: Cross multiply
    558.26x = 770.38 × 309.57
  4. Step 4: Simplify right side
    558.26x = 238,489.81
  5. Step 5: Solve for x
    x = 238,489.81/558.26
  6. Step 6: Final answer
    x = 427.21

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.