Home / 997.04-1,376-686

Finding the Fourth Proportional to 997.04, 1,376 and 686

Calculator

Solution

The fourth proportional to 997.04, 1,376 and 686 is: 946.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    997.04 : 1,376 = 686 : x
  2. Step 2: Convert to fraction form
    997.04/1,376 = 686/x
  3. Step 3: Cross multiply
    997.04x = 1,376 × 686
  4. Step 4: Simplify right side
    997.04x = 943,936
  5. Step 5: Solve for x
    x = 943,936/997.04
  6. Step 6: Final answer
    x = 946.74

Related Problems

Find fourth proportional to 498.52, 688 and 343
Half scale
Find fourth proportional to 1,994.08, 2,752 and 1,372
Double scale
Find fourth proportional to 998.04, 1,377.38 and 687
Similar ratio
Find fourth proportional to 1,495.56, 2,064 and 1,029
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.