Home / 626.02-939.04-421.29

Finding the Fourth Proportional to 626.02, 939.04 and 421.29

Calculator

Solution

The fourth proportional to 626.02, 939.04 and 421.29 is: 631.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    626.02 : 939.04 = 421.29 : x
  2. Step 2: Convert to fraction form
    626.02/939.04 = 421.29/x
  3. Step 3: Cross multiply
    626.02x = 939.04 × 421.29
  4. Step 4: Simplify right side
    626.02x = 395,607.11
  5. Step 5: Solve for x
    x = 395,607.11/626.02
  6. Step 6: Final answer
    x = 631.94

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.