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Finding the Fourth Proportional to 1,367.23, 1,886.78 and 746.23

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Solution

The fourth proportional to 1,367.23, 1,886.78 and 746.23 is: 1,029.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.23 : 1,886.78 = 746.23 : x
  2. Step 2: Convert to fraction form
    1,367.23/1,886.78 = 746.23/x
  3. Step 3: Cross multiply
    1,367.23x = 1,886.78 × 746.23
  4. Step 4: Simplify right side
    1,367.23x = 1,407,971.84
  5. Step 5: Solve for x
    x = 1,407,971.84/1,367.23
  6. Step 6: Final answer
    x = 1,029.80

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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.