Home / 697.95-963.15-403.20

Finding the Fourth Proportional to 697.95, 963.15 and 403.20

Calculator

Solution

The fourth proportional to 697.95, 963.15 and 403.20 is: 556.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    697.95 : 963.15 = 403.20 : x
  2. Step 2: Convert to fraction form
    697.95/963.15 = 403.20/x
  3. Step 3: Cross multiply
    697.95x = 963.15 × 403.20
  4. Step 4: Simplify right side
    697.95x = 388,342.08
  5. Step 5: Solve for x
    x = 388,342.08/697.95
  6. Step 6: Final answer
    x = 556.40

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.