Home / 975.92-1,464-398.72

Finding the Fourth Proportional to 975.92, 1,464 and 398.72

Calculator

Solution

The fourth proportional to 975.92, 1,464 and 398.72 is: 598.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.92 : 1,464 = 398.72 : x
  2. Step 2: Convert to fraction form
    975.92/1,464 = 398.72/x
  3. Step 3: Cross multiply
    975.92x = 1,464 × 398.72
  4. Step 4: Simplify right side
    975.92x = 583,726.08
  5. Step 5: Solve for x
    x = 583,726.08/975.92
  6. Step 6: Final answer
    x = 598.13

Related Problems

Find fourth proportional to 487.96, 732 and 199.36
Half scale
Find fourth proportional to 1,951.84, 2,928 and 797.44
Double scale
Find fourth proportional to 976.92, 1,465.50 and 399.72
Similar ratio
Find fourth proportional to 1,463.88, 2,196 and 598.08
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.