Home / 991.59-1,368.36-549.51

Finding the Fourth Proportional to 991.59, 1,368.36 and 549.51

Calculator

Solution

The fourth proportional to 991.59, 1,368.36 and 549.51 is: 758.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    991.59 : 1,368.36 = 549.51 : x
  2. Step 2: Convert to fraction form
    991.59/1,368.36 = 549.51/x
  3. Step 3: Cross multiply
    991.59x = 1,368.36 × 549.51
  4. Step 4: Simplify right side
    991.59x = 751,927.50
  5. Step 5: Solve for x
    x = 751,927.50/991.59
  6. Step 6: Final answer
    x = 758.30

Related Problems

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.