Home / 202.61-279.32-128.93

Finding the Fourth Proportional to 202.61, 279.32 and 128.93

Calculator

Solution

The fourth proportional to 202.61, 279.32 and 128.93 is: 177.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.61 : 279.32 = 128.93 : x
  2. Step 2: Convert to fraction form
    202.61/279.32 = 128.93/x
  3. Step 3: Cross multiply
    202.61x = 279.32 × 128.93
  4. Step 4: Simplify right side
    202.61x = 36,010.69
  5. Step 5: Solve for x
    x = 36,010.69/202.61
  6. Step 6: Final answer
    x = 177.73

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.