Home / 320.36-442.07-189.35

Finding the Fourth Proportional to 320.36, 442.07 and 189.35

Calculator

Solution

The fourth proportional to 320.36, 442.07 and 189.35 is: 261.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.36 : 442.07 = 189.35 : x
  2. Step 2: Convert to fraction form
    320.36/442.07 = 189.35/x
  3. Step 3: Cross multiply
    320.36x = 442.07 × 189.35
  4. Step 4: Simplify right side
    320.36x = 83,703.74
  5. Step 5: Solve for x
    x = 83,703.74/320.36
  6. Step 6: Final answer
    x = 261.28

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.