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Finding the Fourth Proportional to 179.55, 248.91 and 170.31

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Solution

The fourth proportional to 179.55, 248.91 and 170.31 is: 236.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.55 : 248.91 = 170.31 : x
  2. Step 2: Convert to fraction form
    179.55/248.91 = 170.31/x
  3. Step 3: Cross multiply
    179.55x = 248.91 × 170.31
  4. Step 4: Simplify right side
    179.55x = 42,391.86
  5. Step 5: Solve for x
    x = 42,391.86/179.55
  6. Step 6: Final answer
    x = 236.10

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.