Home / 398.17-549.48-223.51

Finding the Fourth Proportional to 398.17, 549.48 and 223.51

Calculator

Solution

The fourth proportional to 398.17, 549.48 and 223.51 is: 308.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.17 : 549.48 = 223.51 : x
  2. Step 2: Convert to fraction form
    398.17/549.48 = 223.51/x
  3. Step 3: Cross multiply
    398.17x = 549.48 × 223.51
  4. Step 4: Simplify right side
    398.17x = 122,814.27
  5. Step 5: Solve for x
    x = 122,814.27/398.17
  6. Step 6: Final answer
    x = 308.45

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.