Home / 1,055.50-1,583.25-286

Finding the Fourth Proportional to 1,055.50, 1,583.25 and 286

Calculator

Solution

The fourth proportional to 1,055.50, 1,583.25 and 286 is: 429

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055.50 : 1,583.25 = 286 : x
  2. Step 2: Convert to fraction form
    1,055.50/1,583.25 = 286/x
  3. Step 3: Cross multiply
    1,055.50x = 1,583.25 × 286
  4. Step 4: Simplify right side
    1,055.50x = 452,809.50
  5. Step 5: Solve for x
    x = 452,809.50/1,055.50
  6. Step 6: Final answer
    x = 429

Related Problems

Find fourth proportional to 527.75, 791.63 and 143
Half scale
Find fourth proportional to 2,111, 3,166.50 and 572
Double scale
Find fourth proportional to 1,056.50, 1,584.75 and 287
Similar ratio
Find fourth proportional to 1,583.25, 2,374.88 and 429
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.