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Finding the Fourth Proportional to 1,260.66, 1,890.99 and 744.27

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Solution

The fourth proportional to 1,260.66, 1,890.99 and 744.27 is: 1,116.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.66 : 1,890.99 = 744.27 : x
  2. Step 2: Convert to fraction form
    1,260.66/1,890.99 = 744.27/x
  3. Step 3: Cross multiply
    1,260.66x = 1,890.99 × 744.27
  4. Step 4: Simplify right side
    1,260.66x = 1,407,407.13
  5. Step 5: Solve for x
    x = 1,407,407.13/1,260.66
  6. Step 6: Final answer
    x = 1,116.41

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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.