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Finding the Fourth Proportional to 1,367.22, 1,886.76 and 746.22

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Solution

The fourth proportional to 1,367.22, 1,886.76 and 746.22 is: 1,029.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.22 : 1,886.76 = 746.22 : x
  2. Step 2: Convert to fraction form
    1,367.22/1,886.76 = 746.22/x
  3. Step 3: Cross multiply
    1,367.22x = 1,886.76 × 746.22
  4. Step 4: Simplify right side
    1,367.22x = 1,407,938.05
  5. Step 5: Solve for x
    x = 1,407,938.05/1,367.22
  6. Step 6: Final answer
    x = 1,029.78

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.