Home / 641.34-891.18-634.66

Finding the Fourth Proportional to 641.34, 891.18 and 634.66

Calculator

Solution

The fourth proportional to 641.34, 891.18 and 634.66 is: 881.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.34 : 891.18 = 634.66 : x
  2. Step 2: Convert to fraction form
    641.34/891.18 = 634.66/x
  3. Step 3: Cross multiply
    641.34x = 891.18 × 634.66
  4. Step 4: Simplify right side
    641.34x = 565,594.07
  5. Step 5: Solve for x
    x = 565,594.07/641.34
  6. Step 6: Final answer
    x = 881.89

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.