Home / 472-708-130

Finding the Fourth Proportional to 472, 708 and 130

Calculator

Solution

The fourth proportional to 472, 708 and 130 is: 195

Step by Step Solution

  1. Step 1: Write the proportion equation
    472 : 708 = 130 : x
  2. Step 2: Convert to fraction form
    472/708 = 130/x
  3. Step 3: Cross multiply
    472x = 708 × 130
  4. Step 4: Simplify right side
    472x = 92,040
  5. Step 5: Solve for x
    x = 92,040/472
  6. Step 6: Final answer
    x = 195

Related Problems

Find fourth proportional to 236, 354 and 65
Half scale
Find fourth proportional to 944, 1,416 and 260
Double scale
Find fourth proportional to 473, 709.50 and 131
Similar ratio
Find fourth proportional to 708, 1,062 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.