Home / 1,076.50-1,615.02-307

Finding the Fourth Proportional to 1,076.50, 1,615.02 and 307

Calculator

Solution

The fourth proportional to 1,076.50, 1,615.02 and 307 is: 460.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076.50 : 1,615.02 = 307 : x
  2. Step 2: Convert to fraction form
    1,076.50/1,615.02 = 307/x
  3. Step 3: Cross multiply
    1,076.50x = 1,615.02 × 307
  4. Step 4: Simplify right side
    1,076.50x = 495,811.14
  5. Step 5: Solve for x
    x = 495,811.14/1,076.50
  6. Step 6: Final answer
    x = 460.58

Related Problems

Find fourth proportional to 538.25, 807.51 and 153.50
Half scale
Find fourth proportional to 2,153, 3,230.04 and 614
Double scale
Find fourth proportional to 1,077.50, 1,616.52 and 308
Similar ratio
Find fourth proportional to 1,614.75, 2,422.53 and 460.50
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.