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Finding the Fourth Proportional to 730.31, 1,095.12 and 243.23

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Solution

The fourth proportional to 730.31, 1,095.12 and 243.23 is: 364.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    730.31 : 1,095.12 = 243.23 : x
  2. Step 2: Convert to fraction form
    730.31/1,095.12 = 243.23/x
  3. Step 3: Cross multiply
    730.31x = 1,095.12 × 243.23
  4. Step 4: Simplify right side
    730.31x = 266,360.56
  5. Step 5: Solve for x
    x = 266,360.56/730.31
  6. Step 6: Final answer
    x = 364.73

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Double scale
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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.