Home / 708.21-1,063.13-420.26

Finding the Fourth Proportional to 708.21, 1,063.13 and 420.26

Calculator

Solution

The fourth proportional to 708.21, 1,063.13 and 420.26 is: 630.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.21 : 1,063.13 = 420.26 : x
  2. Step 2: Convert to fraction form
    708.21/1,063.13 = 420.26/x
  3. Step 3: Cross multiply
    708.21x = 1,063.13 × 420.26
  4. Step 4: Simplify right side
    708.21x = 446,783.60
  5. Step 5: Solve for x
    x = 446,783.60/708.21
  6. Step 6: Final answer
    x = 630.86

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.