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Finding the Fourth Proportional to 726.82, 1,090.72 and 402.44

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Solution

The fourth proportional to 726.82, 1,090.72 and 402.44 is: 603.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    726.82 : 1,090.72 = 402.44 : x
  2. Step 2: Convert to fraction form
    726.82/1,090.72 = 402.44/x
  3. Step 3: Cross multiply
    726.82x = 1,090.72 × 402.44
  4. Step 4: Simplify right side
    726.82x = 438,949.36
  5. Step 5: Solve for x
    x = 438,949.36/726.82
  6. Step 6: Final answer
    x = 603.93

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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.