Home / 1,081.50-1,621.44-350.64

Finding the Fourth Proportional to 1,081.50, 1,621.44 and 350.64

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Solution

The fourth proportional to 1,081.50, 1,621.44 and 350.64 is: 525.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.50 : 1,621.44 = 350.64 : x
  2. Step 2: Convert to fraction form
    1,081.50/1,621.44 = 350.64/x
  3. Step 3: Cross multiply
    1,081.50x = 1,621.44 × 350.64
  4. Step 4: Simplify right side
    1,081.50x = 568,541.72
  5. Step 5: Solve for x
    x = 568,541.72/1,081.50
  6. Step 6: Final answer
    x = 525.70

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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.