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Finding the Fourth Proportional to 275.12, 379.25 and 170.02

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Solution

The fourth proportional to 275.12, 379.25 and 170.02 is: 234.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.12 : 379.25 = 170.02 : x
  2. Step 2: Convert to fraction form
    275.12/379.25 = 170.02/x
  3. Step 3: Cross multiply
    275.12x = 379.25 × 170.02
  4. Step 4: Simplify right side
    275.12x = 64,477.74
  5. Step 5: Solve for x
    x = 64,477.74/275.12
  6. Step 6: Final answer
    x = 234.36

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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.