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Finding the Fourth Proportional to 730.29, 1,093.82 and 405.45

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Solution

The fourth proportional to 730.29, 1,093.82 and 405.45 is: 607.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.29 : 1,093.82 = 405.45 : x
  2. Step 2: Convert to fraction form
    730.29/1,093.82 = 405.45/x
  3. Step 3: Cross multiply
    730.29x = 1,093.82 × 405.45
  4. Step 4: Simplify right side
    730.29x = 443,487.29
  5. Step 5: Solve for x
    x = 443,487.29/730.29
  6. Step 6: Final answer
    x = 607.28

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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.