Home / 988-1,482-410.90

Finding the Fourth Proportional to 988, 1,482 and 410.90

Calculator

Solution

The fourth proportional to 988, 1,482 and 410.90 is: 616.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    988 : 1,482 = 410.90 : x
  2. Step 2: Convert to fraction form
    988/1,482 = 410.90/x
  3. Step 3: Cross multiply
    988x = 1,482 × 410.90
  4. Step 4: Simplify right side
    988x = 608,953.80
  5. Step 5: Solve for x
    x = 608,953.80/988
  6. Step 6: Final answer
    x = 616.35

Related Problems

Find fourth proportional to 494, 741 and 205.45
Half scale
Find fourth proportional to 1,976, 2,964 and 821.80
Double scale
Find fourth proportional to 989, 1,483.50 and 411.90
Similar ratio
Find fourth proportional to 1,482, 2,223 and 616.35
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.