Home / 802.40-1,203.60-455.84

Finding the Fourth Proportional to 802.40, 1,203.60 and 455.84

Calculator

Solution

The fourth proportional to 802.40, 1,203.60 and 455.84 is: 683.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.40 : 1,203.60 = 455.84 : x
  2. Step 2: Convert to fraction form
    802.40/1,203.60 = 455.84/x
  3. Step 3: Cross multiply
    802.40x = 1,203.60 × 455.84
  4. Step 4: Simplify right side
    802.40x = 548,649.02
  5. Step 5: Solve for x
    x = 548,649.02/802.40
  6. Step 6: Final answer
    x = 683.76

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.