Home / 301-451.50-130

Finding the Fourth Proportional to 301, 451.50 and 130

Calculator

Solution

The fourth proportional to 301, 451.50 and 130 is: 195

Step by Step Solution

  1. Step 1: Write the proportion equation
    301 : 451.50 = 130 : x
  2. Step 2: Convert to fraction form
    301/451.50 = 130/x
  3. Step 3: Cross multiply
    301x = 451.50 × 130
  4. Step 4: Simplify right side
    301x = 58,695
  5. Step 5: Solve for x
    x = 58,695/301
  6. Step 6: Final answer
    x = 195

Related Problems

Find fourth proportional to 150.50, 225.75 and 65
Half scale
Find fourth proportional to 602, 903 and 260
Double scale
Find fourth proportional to 302, 453 and 131
Similar ratio
Find fourth proportional to 451.50, 677.25 and 195
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.