Home / 206.64-309.80-188.80

Finding the Fourth Proportional to 206.64, 309.80 and 188.80

Calculator

Solution

The fourth proportional to 206.64, 309.80 and 188.80 is: 283.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    206.64 : 309.80 = 188.80 : x
  2. Step 2: Convert to fraction form
    206.64/309.80 = 188.80/x
  3. Step 3: Cross multiply
    206.64x = 309.80 × 188.80
  4. Step 4: Simplify right side
    206.64x = 58,490.24
  5. Step 5: Solve for x
    x = 58,490.24/206.64
  6. Step 6: Final answer
    x = 283.05

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.