Home / 982.56-1,356-568.56

Finding the Fourth Proportional to 982.56, 1,356 and 568.56

Calculator

Solution

The fourth proportional to 982.56, 1,356 and 568.56 is: 784.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    982.56 : 1,356 = 568.56 : x
  2. Step 2: Convert to fraction form
    982.56/1,356 = 568.56/x
  3. Step 3: Cross multiply
    982.56x = 1,356 × 568.56
  4. Step 4: Simplify right side
    982.56x = 770,967.36
  5. Step 5: Solve for x
    x = 770,967.36/982.56
  6. Step 6: Final answer
    x = 784.65

Related Problems

Find fourth proportional to 491.28, 678 and 284.28
Half scale
Find fourth proportional to 1,965.12, 2,712 and 1,137.12
Double scale
Find fourth proportional to 983.56, 1,357.38 and 569.56
Similar ratio
Find fourth proportional to 1,473.84, 2,034 and 852.84
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.