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Finding the Fourth Proportional to 360.88, 498.02 and 213.56

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Solution

The fourth proportional to 360.88, 498.02 and 213.56 is: 294.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.88 : 498.02 = 213.56 : x
  2. Step 2: Convert to fraction form
    360.88/498.02 = 213.56/x
  3. Step 3: Cross multiply
    360.88x = 498.02 × 213.56
  4. Step 4: Simplify right side
    360.88x = 106,357.15
  5. Step 5: Solve for x
    x = 106,357.15/360.88
  6. Step 6: Final answer
    x = 294.72

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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.