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Finding the Fourth Proportional to 213.08, 319.80 and 116.96

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Solution

The fourth proportional to 213.08, 319.80 and 116.96 is: 175.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.08 : 319.80 = 116.96 : x
  2. Step 2: Convert to fraction form
    213.08/319.80 = 116.96/x
  3. Step 3: Cross multiply
    213.08x = 319.80 × 116.96
  4. Step 4: Simplify right side
    213.08x = 37,403.81
  5. Step 5: Solve for x
    x = 37,403.81/213.08
  6. Step 6: Final answer
    x = 175.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.