Home / 304-456-130.80

Finding the Fourth Proportional to 304, 456 and 130.80

Calculator

Solution

The fourth proportional to 304, 456 and 130.80 is: 196.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    304 : 456 = 130.80 : x
  2. Step 2: Convert to fraction form
    304/456 = 130.80/x
  3. Step 3: Cross multiply
    304x = 456 × 130.80
  4. Step 4: Simplify right side
    304x = 59,644.80
  5. Step 5: Solve for x
    x = 59,644.80/304
  6. Step 6: Final answer
    x = 196.20

Related Problems

Find fourth proportional to 152, 228 and 65.40
Half scale
Find fourth proportional to 608, 912 and 261.60
Double scale
Find fourth proportional to 305, 457.50 and 131.80
Similar ratio
Find fourth proportional to 456, 684 and 196.20
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.