Home / 239-358.50-170.60

Finding the Fourth Proportional to 239, 358.50 and 170.60

Calculator

Solution

The fourth proportional to 239, 358.50 and 170.60 is: 255.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    239 : 358.50 = 170.60 : x
  2. Step 2: Convert to fraction form
    239/358.50 = 170.60/x
  3. Step 3: Cross multiply
    239x = 358.50 × 170.60
  4. Step 4: Simplify right side
    239x = 61,160.10
  5. Step 5: Solve for x
    x = 61,160.10/239
  6. Step 6: Final answer
    x = 255.90

Related Problems

Find fourth proportional to 119.50, 179.25 and 85.30
Half scale
Find fourth proportional to 478, 717 and 341.20
Double scale
Find fourth proportional to 240, 360 and 171.60
Similar ratio
Find fourth proportional to 358.50, 537.75 and 255.90
1.5x scale

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.