Home / 388.45-536.05-222.66

Finding the Fourth Proportional to 388.45, 536.05 and 222.66

Calculator

Solution

The fourth proportional to 388.45, 536.05 and 222.66 is: 307.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    388.45 : 536.05 = 222.66 : x
  2. Step 2: Convert to fraction form
    388.45/536.05 = 222.66/x
  3. Step 3: Cross multiply
    388.45x = 536.05 × 222.66
  4. Step 4: Simplify right side
    388.45x = 119,356.89
  5. Step 5: Solve for x
    x = 119,356.89/388.45
  6. Step 6: Final answer
    x = 307.26

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.