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Finding the Fourth Proportional to 275.07, 379.45 and 170.07

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Solution

The fourth proportional to 275.07, 379.45 and 170.07 is: 234.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.07 : 379.45 = 170.07 : x
  2. Step 2: Convert to fraction form
    275.07/379.45 = 170.07/x
  3. Step 3: Cross multiply
    275.07x = 379.45 × 170.07
  4. Step 4: Simplify right side
    275.07x = 64,533.06
  5. Step 5: Solve for x
    x = 64,533.06/275.07
  6. Step 6: Final answer
    x = 234.61

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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.