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Finding the Fourth Proportional to 360.05, 496.85 and 202.66

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Solution

The fourth proportional to 360.05, 496.85 and 202.66 is: 279.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.05 : 496.85 = 202.66 : x
  2. Step 2: Convert to fraction form
    360.05/496.85 = 202.66/x
  3. Step 3: Cross multiply
    360.05x = 496.85 × 202.66
  4. Step 4: Simplify right side
    360.05x = 100,689.37
  5. Step 5: Solve for x
    x = 100,689.37/360.05
  6. Step 6: Final answer
    x = 279.66

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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.