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Finding the Fourth Proportional to 360.18, 496.96 and 212.72

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Solution

The fourth proportional to 360.18, 496.96 and 212.72 is: 293.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.18 : 496.96 = 212.72 : x
  2. Step 2: Convert to fraction form
    360.18/496.96 = 212.72/x
  3. Step 3: Cross multiply
    360.18x = 496.96 × 212.72
  4. Step 4: Simplify right side
    360.18x = 105,713.33
  5. Step 5: Solve for x
    x = 105,713.33/360.18
  6. Step 6: Final answer
    x = 293.50

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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.