Home / 840.40-1,159.30-508.94

Finding the Fourth Proportional to 840.40, 1,159.30 and 508.94

Calculator

Solution

The fourth proportional to 840.40, 1,159.30 and 508.94 is: 702.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    840.40 : 1,159.30 = 508.94 : x
  2. Step 2: Convert to fraction form
    840.40/1,159.30 = 508.94/x
  3. Step 3: Cross multiply
    840.40x = 1,159.30 × 508.94
  4. Step 4: Simplify right side
    840.40x = 590,014.14
  5. Step 5: Solve for x
    x = 590,014.14/840.40
  6. Step 6: Final answer
    x = 702.06

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.