Home / 1,321.34-1,982.00-443.77

Finding the Fourth Proportional to 1,321.34, 1,982.00 and 443.77

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Solution

The fourth proportional to 1,321.34, 1,982.00 and 443.77 is: 665.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321.34 : 1,982.00 = 443.77 : x
  2. Step 2: Convert to fraction form
    1,321.34/1,982.00 = 443.77/x
  3. Step 3: Cross multiply
    1,321.34x = 1,982.00 × 443.77
  4. Step 4: Simplify right side
    1,321.34x = 879,548.29
  5. Step 5: Solve for x
    x = 879,548.29/1,321.34
  6. Step 6: Final answer
    x = 665.65

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Double scale
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Similar ratio
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1.5x scale

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.