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Finding the Fourth Proportional to 275.05, 412.03 and 247.74

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Solution

The fourth proportional to 275.05, 412.03 and 247.74 is: 371.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.05 : 412.03 = 247.74 : x
  2. Step 2: Convert to fraction form
    275.05/412.03 = 247.74/x
  3. Step 3: Cross multiply
    275.05x = 412.03 × 247.74
  4. Step 4: Simplify right side
    275.05x = 102,076.31
  5. Step 5: Solve for x
    x = 102,076.31/275.05
  6. Step 6: Final answer
    x = 371.12

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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.