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Finding the Fourth Proportional to 755.82, 1,043.28 and 441.18

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Solution

The fourth proportional to 755.82, 1,043.28 and 441.18 is: 608.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.82 : 1,043.28 = 441.18 : x
  2. Step 2: Convert to fraction form
    755.82/1,043.28 = 441.18/x
  3. Step 3: Cross multiply
    755.82x = 1,043.28 × 441.18
  4. Step 4: Simplify right side
    755.82x = 460,274.27
  5. Step 5: Solve for x
    x = 460,274.27/755.82
  6. Step 6: Final answer
    x = 608.97

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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.