Home / 645.57-891-365.82

Finding the Fourth Proportional to 645.57, 891 and 365.82

Calculator

Solution

The fourth proportional to 645.57, 891 and 365.82 is: 504.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    645.57 : 891 = 365.82 : x
  2. Step 2: Convert to fraction form
    645.57/891 = 365.82/x
  3. Step 3: Cross multiply
    645.57x = 891 × 365.82
  4. Step 4: Simplify right side
    645.57x = 325,945.62
  5. Step 5: Solve for x
    x = 325,945.62/645.57
  6. Step 6: Final answer
    x = 504.90

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.