Home / 1,085.80-1,629.60-599.28

Finding the Fourth Proportional to 1,085.80, 1,629.60 and 599.28

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Solution

The fourth proportional to 1,085.80, 1,629.60 and 599.28 is: 899.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085.80 : 1,629.60 = 599.28 : x
  2. Step 2: Convert to fraction form
    1,085.80/1,629.60 = 599.28/x
  3. Step 3: Cross multiply
    1,085.80x = 1,629.60 × 599.28
  4. Step 4: Simplify right side
    1,085.80x = 976,586.69
  5. Step 5: Solve for x
    x = 976,586.69/1,085.80
  6. Step 6: Final answer
    x = 899.42

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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.