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Finding the Fourth Proportional to 275.49, 412.81 and 183.85

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Solution

The fourth proportional to 275.49, 412.81 and 183.85 is: 275.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.49 : 412.81 = 183.85 : x
  2. Step 2: Convert to fraction form
    275.49/412.81 = 183.85/x
  3. Step 3: Cross multiply
    275.49x = 412.81 × 183.85
  4. Step 4: Simplify right side
    275.49x = 75,895.12
  5. Step 5: Solve for x
    x = 75,895.12/275.49
  6. Step 6: Final answer
    x = 275.49

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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.