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Finding the Fourth Proportional to 275.06, 412.53 and 120.96

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Solution

The fourth proportional to 275.06, 412.53 and 120.96 is: 181.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.06 : 412.53 = 120.96 : x
  2. Step 2: Convert to fraction form
    275.06/412.53 = 120.96/x
  3. Step 3: Cross multiply
    275.06x = 412.53 × 120.96
  4. Step 4: Simplify right side
    275.06x = 49,899.63
  5. Step 5: Solve for x
    x = 49,899.63/275.06
  6. Step 6: Final answer
    x = 181.42

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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.