Home / 581.52-866-578.64

Finding the Fourth Proportional to 581.52, 866 and 578.64

Calculator

Solution

The fourth proportional to 581.52, 866 and 578.64 is: 861.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.52 : 866 = 578.64 : x
  2. Step 2: Convert to fraction form
    581.52/866 = 578.64/x
  3. Step 3: Cross multiply
    581.52x = 866 × 578.64
  4. Step 4: Simplify right side
    581.52x = 501,102.24
  5. Step 5: Solve for x
    x = 501,102.24/581.52
  6. Step 6: Final answer
    x = 861.71

Related Problems

Find fourth proportional to 290.76, 433 and 289.32
Half scale
Find fourth proportional to 1,163.04, 1,732 and 1,157.28
Double scale
Find fourth proportional to 582.52, 867.49 and 579.64
Similar ratio
Find fourth proportional to 872.28, 1,299 and 867.96
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.