Home / 656.78-906.31-376.98

Finding the Fourth Proportional to 656.78, 906.31 and 376.98

Calculator

Solution

The fourth proportional to 656.78, 906.31 and 376.98 is: 520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.78 : 906.31 = 376.98 : x
  2. Step 2: Convert to fraction form
    656.78/906.31 = 376.98/x
  3. Step 3: Cross multiply
    656.78x = 906.31 × 376.98
  4. Step 4: Simplify right side
    656.78x = 341,661.43
  5. Step 5: Solve for x
    x = 341,661.43/656.78
  6. Step 6: Final answer
    x = 520.20

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.