Home / 1,020.74-1,531.11-327.41

Finding the Fourth Proportional to 1,020.74, 1,531.11 and 327.41

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Solution

The fourth proportional to 1,020.74, 1,531.11 and 327.41 is: 491.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.74 : 1,531.11 = 327.41 : x
  2. Step 2: Convert to fraction form
    1,020.74/1,531.11 = 327.41/x
  3. Step 3: Cross multiply
    1,020.74x = 1,531.11 × 327.41
  4. Step 4: Simplify right side
    1,020.74x = 501,295.73
  5. Step 5: Solve for x
    x = 501,295.73/1,020.74
  6. Step 6: Final answer
    x = 491.11

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Double scale
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Similar ratio
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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.