Home / 612-918-352

Finding the Fourth Proportional to 612, 918 and 352

Calculator

Solution

The fourth proportional to 612, 918 and 352 is: 528

Step by Step Solution

  1. Step 1: Write the proportion equation
    612 : 918 = 352 : x
  2. Step 2: Convert to fraction form
    612/918 = 352/x
  3. Step 3: Cross multiply
    612x = 918 × 352
  4. Step 4: Simplify right side
    612x = 323,136
  5. Step 5: Solve for x
    x = 323,136/612
  6. Step 6: Final answer
    x = 528

Related Problems

Find fourth proportional to 306, 459 and 176
Half scale
Find fourth proportional to 1,224, 1,836 and 704
Double scale
Find fourth proportional to 613, 919.50 and 353
Similar ratio
Find fourth proportional to 918, 1,377 and 528
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.