Home / 850.12-1,172.80-535.52

Finding the Fourth Proportional to 850.12, 1,172.80 and 535.52

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Solution

The fourth proportional to 850.12, 1,172.80 and 535.52 is: 738.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.12 : 1,172.80 = 535.52 : x
  2. Step 2: Convert to fraction form
    850.12/1,172.80 = 535.52/x
  3. Step 3: Cross multiply
    850.12x = 1,172.80 × 535.52
  4. Step 4: Simplify right side
    850.12x = 628,057.86
  5. Step 5: Solve for x
    x = 628,057.86/850.12
  6. Step 6: Final answer
    x = 738.79

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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.