Home / 1,178-1,767.72-494

Finding the Fourth Proportional to 1,178, 1,767.72 and 494

Calculator

Solution

The fourth proportional to 1,178, 1,767.72 and 494 is: 741.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178 : 1,767.72 = 494 : x
  2. Step 2: Convert to fraction form
    1,178/1,767.72 = 494/x
  3. Step 3: Cross multiply
    1,178x = 1,767.72 × 494
  4. Step 4: Simplify right side
    1,178x = 873,253.68
  5. Step 5: Solve for x
    x = 873,253.68/1,178
  6. Step 6: Final answer
    x = 741.30

Related Problems

Find fourth proportional to 589, 883.86 and 247
Half scale
Find fourth proportional to 2,356, 3,535.44 and 988
Double scale
Find fourth proportional to 1,179, 1,769.22 and 495
Similar ratio
Find fourth proportional to 1,767, 2,651.58 and 741
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.