Home / 916.26-1,374-291.41

Finding the Fourth Proportional to 916.26, 1,374 and 291.41

Calculator

Solution

The fourth proportional to 916.26, 1,374 and 291.41 is: 436.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.26 : 1,374 = 291.41 : x
  2. Step 2: Convert to fraction form
    916.26/1,374 = 291.41/x
  3. Step 3: Cross multiply
    916.26x = 1,374 × 291.41
  4. Step 4: Simplify right side
    916.26x = 400,397.34
  5. Step 5: Solve for x
    x = 400,397.34/916.26
  6. Step 6: Final answer
    x = 436.99

Related Problems

Find fourth proportional to 458.13, 687 and 145.71
Half scale
Find fourth proportional to 1,832.52, 2,748 and 582.82
Double scale
Find fourth proportional to 917.26, 1,375.50 and 292.41
Similar ratio
Find fourth proportional to 1,374.39, 2,061 and 437.12
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.