Home / 1,058-1,587-450

Finding the Fourth Proportional to 1,058, 1,587 and 450

Calculator

Solution

The fourth proportional to 1,058, 1,587 and 450 is: 675

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,058 : 1,587 = 450 : x
  2. Step 2: Convert to fraction form
    1,058/1,587 = 450/x
  3. Step 3: Cross multiply
    1,058x = 1,587 × 450
  4. Step 4: Simplify right side
    1,058x = 714,150
  5. Step 5: Solve for x
    x = 714,150/1,058
  6. Step 6: Final answer
    x = 675

Related Problems

Find fourth proportional to 529, 793.50 and 225
Half scale
Find fourth proportional to 2,116, 3,174 and 900
Double scale
Find fourth proportional to 1,059, 1,588.50 and 451
Similar ratio
Find fourth proportional to 1,587, 2,380.50 and 675
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.