Home / 687.96-1,031.67-277.02

Finding the Fourth Proportional to 687.96, 1,031.67 and 277.02

Calculator

Solution

The fourth proportional to 687.96, 1,031.67 and 277.02 is: 415.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    687.96 : 1,031.67 = 277.02 : x
  2. Step 2: Convert to fraction form
    687.96/1,031.67 = 277.02/x
  3. Step 3: Cross multiply
    687.96x = 1,031.67 × 277.02
  4. Step 4: Simplify right side
    687.96x = 285,793.22
  5. Step 5: Solve for x
    x = 285,793.22/687.96
  6. Step 6: Final answer
    x = 415.42

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.