Home / 582.78-874.52-217.56

Finding the Fourth Proportional to 582.78, 874.52 and 217.56

Calculator

Solution

The fourth proportional to 582.78, 874.52 and 217.56 is: 326.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    582.78 : 874.52 = 217.56 : x
  2. Step 2: Convert to fraction form
    582.78/874.52 = 217.56/x
  3. Step 3: Cross multiply
    582.78x = 874.52 × 217.56
  4. Step 4: Simplify right side
    582.78x = 190,260.57
  5. Step 5: Solve for x
    x = 190,260.57/582.78
  6. Step 6: Final answer
    x = 326.47

Related Problems

Find fourth proportional to 291.39, 437.26 and 108.78
Half scale
Find fourth proportional to 1,165.56, 1,749.04 and 435.12
Double scale
Find fourth proportional to 583.78, 876.02 and 218.56
Similar ratio
Find fourth proportional to 874.17, 1,311.78 and 326.34
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.