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Finding the Fourth Proportional to 1,243.04, 1,864.22 and 365.54

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Solution

The fourth proportional to 1,243.04, 1,864.22 and 365.54 is: 548.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.04 : 1,864.22 = 365.54 : x
  2. Step 2: Convert to fraction form
    1,243.04/1,864.22 = 365.54/x
  3. Step 3: Cross multiply
    1,243.04x = 1,864.22 × 365.54
  4. Step 4: Simplify right side
    1,243.04x = 681,446.98
  5. Step 5: Solve for x
    x = 681,446.98/1,243.04
  6. Step 6: Final answer
    x = 548.21

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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.