Home / 744-1,116-288

Finding the Fourth Proportional to 744, 1,116 and 288

Calculator

Solution

The fourth proportional to 744, 1,116 and 288 is: 432

Step by Step Solution

  1. Step 1: Write the proportion equation
    744 : 1,116 = 288 : x
  2. Step 2: Convert to fraction form
    744/1,116 = 288/x
  3. Step 3: Cross multiply
    744x = 1,116 × 288
  4. Step 4: Simplify right side
    744x = 321,408
  5. Step 5: Solve for x
    x = 321,408/744
  6. Step 6: Final answer
    x = 432

Related Problems

Find fourth proportional to 372, 558 and 144
Half scale
Find fourth proportional to 1,488, 2,232 and 576
Double scale
Find fourth proportional to 745, 1,117.50 and 289
Similar ratio
Find fourth proportional to 1,116, 1,674 and 432
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.