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Finding the Fourth Proportional to 797.56, 1,100.54 and 443.40

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Solution

The fourth proportional to 797.56, 1,100.54 and 443.40 is: 611.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    797.56 : 1,100.54 = 443.40 : x
  2. Step 2: Convert to fraction form
    797.56/1,100.54 = 443.40/x
  3. Step 3: Cross multiply
    797.56x = 1,100.54 × 443.40
  4. Step 4: Simplify right side
    797.56x = 487,979.44
  5. Step 5: Solve for x
    x = 487,979.44/797.56
  6. Step 6: Final answer
    x = 611.84

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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.