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Finding the Fourth Proportional to 316.80, 437.36 and 212.04

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Solution

The fourth proportional to 316.80, 437.36 and 212.04 is: 292.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.80 : 437.36 = 212.04 : x
  2. Step 2: Convert to fraction form
    316.80/437.36 = 212.04/x
  3. Step 3: Cross multiply
    316.80x = 437.36 × 212.04
  4. Step 4: Simplify right side
    316.80x = 92,736.75
  5. Step 5: Solve for x
    x = 92,736.75/316.80
  6. Step 6: Final answer
    x = 292.73

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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.