Home / 921-1,381.50-237

Finding the Fourth Proportional to 921, 1,381.50 and 237

Calculator

Solution

The fourth proportional to 921, 1,381.50 and 237 is: 355.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    921 : 1,381.50 = 237 : x
  2. Step 2: Convert to fraction form
    921/1,381.50 = 237/x
  3. Step 3: Cross multiply
    921x = 1,381.50 × 237
  4. Step 4: Simplify right side
    921x = 327,415.50
  5. Step 5: Solve for x
    x = 327,415.50/921
  6. Step 6: Final answer
    x = 355.50

Related Problems

Find fourth proportional to 460.50, 690.75 and 118.50
Half scale
Find fourth proportional to 1,842, 2,763 and 474
Double scale
Find fourth proportional to 922, 1,383 and 238
Similar ratio
Find fourth proportional to 1,381.50, 2,072.25 and 355.50
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.