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Finding the Fourth Proportional to 730.72, 1,095.81 and 243.64

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Solution

The fourth proportional to 730.72, 1,095.81 and 243.64 is: 365.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.72 : 1,095.81 = 243.64 : x
  2. Step 2: Convert to fraction form
    730.72/1,095.81 = 243.64/x
  3. Step 3: Cross multiply
    730.72x = 1,095.81 × 243.64
  4. Step 4: Simplify right side
    730.72x = 266,983.15
  5. Step 5: Solve for x
    x = 266,983.15/730.72
  6. Step 6: Final answer
    x = 365.37

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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.