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Finding the Fourth Proportional to 1,035.54, 1,553.31 and 342.27

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Solution

The fourth proportional to 1,035.54, 1,553.31 and 342.27 is: 513.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.54 : 1,553.31 = 342.27 : x
  2. Step 2: Convert to fraction form
    1,035.54/1,553.31 = 342.27/x
  3. Step 3: Cross multiply
    1,035.54x = 1,553.31 × 342.27
  4. Step 4: Simplify right side
    1,035.54x = 531,651.41
  5. Step 5: Solve for x
    x = 531,651.41/1,035.54
  6. Step 6: Final answer
    x = 513.41

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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.