Home / 957.16-1,435.74-380

Finding the Fourth Proportional to 957.16, 1,435.74 and 380

Calculator

Solution

The fourth proportional to 957.16, 1,435.74 and 380 is: 570

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.16 : 1,435.74 = 380 : x
  2. Step 2: Convert to fraction form
    957.16/1,435.74 = 380/x
  3. Step 3: Cross multiply
    957.16x = 1,435.74 × 380
  4. Step 4: Simplify right side
    957.16x = 545,581.20
  5. Step 5: Solve for x
    x = 545,581.20/957.16
  6. Step 6: Final answer
    x = 570

Related Problems

Find fourth proportional to 478.58, 717.87 and 190
Half scale
Find fourth proportional to 1,914.32, 2,871.48 and 760
Double scale
Find fourth proportional to 958.16, 1,437.24 and 381
Similar ratio
Find fourth proportional to 1,435.74, 2,153.61 and 570
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.