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Finding the Fourth Proportional to 360.39, 497.28 and 212.97

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Solution

The fourth proportional to 360.39, 497.28 and 212.97 is: 293.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.39 : 497.28 = 212.97 : x
  2. Step 2: Convert to fraction form
    360.39/497.28 = 212.97/x
  3. Step 3: Cross multiply
    360.39x = 497.28 × 212.97
  4. Step 4: Simplify right side
    360.39x = 105,905.72
  5. Step 5: Solve for x
    x = 105,905.72/360.39
  6. Step 6: Final answer
    x = 293.86

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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.