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Finding the Fourth Proportional to 212.06, 316.83 and 173.04

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Solution

The fourth proportional to 212.06, 316.83 and 173.04 is: 258.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.06 : 316.83 = 173.04 : x
  2. Step 2: Convert to fraction form
    212.06/316.83 = 173.04/x
  3. Step 3: Cross multiply
    212.06x = 316.83 × 173.04
  4. Step 4: Simplify right side
    212.06x = 54,824.26
  5. Step 5: Solve for x
    x = 54,824.26/212.06
  6. Step 6: Final answer
    x = 258.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.