Home / 718.04-1,077.50-285.12

Finding the Fourth Proportional to 718.04, 1,077.50 and 285.12

Calculator

Solution

The fourth proportional to 718.04, 1,077.50 and 285.12 is: 427.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.04 : 1,077.50 = 285.12 : x
  2. Step 2: Convert to fraction form
    718.04/1,077.50 = 285.12/x
  3. Step 3: Cross multiply
    718.04x = 1,077.50 × 285.12
  4. Step 4: Simplify right side
    718.04x = 307,216.80
  5. Step 5: Solve for x
    x = 307,216.80/718.04
  6. Step 6: Final answer
    x = 427.85

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.