Home / 637.31-879.39-357.55

Finding the Fourth Proportional to 637.31, 879.39 and 357.55

Calculator

Solution

The fourth proportional to 637.31, 879.39 and 357.55 is: 493.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    637.31 : 879.39 = 357.55 : x
  2. Step 2: Convert to fraction form
    637.31/879.39 = 357.55/x
  3. Step 3: Cross multiply
    637.31x = 879.39 × 357.55
  4. Step 4: Simplify right side
    637.31x = 314,428.91
  5. Step 5: Solve for x
    x = 314,428.91/637.31
  6. Step 6: Final answer
    x = 493.37

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.