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Finding the Fourth Proportional to 275.15, 379.73 and 164.63

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Solution

The fourth proportional to 275.15, 379.73 and 164.63 is: 227.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.15 : 379.73 = 164.63 : x
  2. Step 2: Convert to fraction form
    275.15/379.73 = 164.63/x
  3. Step 3: Cross multiply
    275.15x = 379.73 × 164.63
  4. Step 4: Simplify right side
    275.15x = 62,516.31
  5. Step 5: Solve for x
    x = 62,516.31/275.15
  6. Step 6: Final answer
    x = 227.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.