Home / 1,090.64-1,636.16-398.28

Finding the Fourth Proportional to 1,090.64, 1,636.16 and 398.28

Calculator

Solution

The fourth proportional to 1,090.64, 1,636.16 and 398.28 is: 597.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090.64 : 1,636.16 = 398.28 : x
  2. Step 2: Convert to fraction form
    1,090.64/1,636.16 = 398.28/x
  3. Step 3: Cross multiply
    1,090.64x = 1,636.16 × 398.28
  4. Step 4: Simplify right side
    1,090.64x = 651,647.81
  5. Step 5: Solve for x
    x = 651,647.81/1,090.64
  6. Step 6: Final answer
    x = 597.49

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.