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Finding the Fourth Proportional to 727.74, 1,091.03 and 362.33

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Solution

The fourth proportional to 727.74, 1,091.03 and 362.33 is: 543.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.74 : 1,091.03 = 362.33 : x
  2. Step 2: Convert to fraction form
    727.74/1,091.03 = 362.33/x
  3. Step 3: Cross multiply
    727.74x = 1,091.03 × 362.33
  4. Step 4: Simplify right side
    727.74x = 395,305.63
  5. Step 5: Solve for x
    x = 395,305.63/727.74
  6. Step 6: Final answer
    x = 543.20

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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.