Home / 973.91-1,344-624.80

Finding the Fourth Proportional to 973.91, 1,344 and 624.80

Calculator

Solution

The fourth proportional to 973.91, 1,344 and 624.80 is: 862.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.91 : 1,344 = 624.80 : x
  2. Step 2: Convert to fraction form
    973.91/1,344 = 624.80/x
  3. Step 3: Cross multiply
    973.91x = 1,344 × 624.80
  4. Step 4: Simplify right side
    973.91x = 839,731.20
  5. Step 5: Solve for x
    x = 839,731.20/973.91
  6. Step 6: Final answer
    x = 862.23

Related Problems

Find fourth proportional to 486.96, 672 and 312.40
Half scale
Find fourth proportional to 1,947.82, 2,688 and 1,249.60
Double scale
Find fourth proportional to 974.91, 1,345.38 and 625.80
Similar ratio
Find fourth proportional to 1,460.87, 2,016 and 937.20
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.