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Finding the Fourth Proportional to 360.15, 496.49 and 305.07

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Solution

The fourth proportional to 360.15, 496.49 and 305.07 is: 420.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    360.15 : 496.49 = 305.07 : x
  2. Step 2: Convert to fraction form
    360.15/496.49 = 305.07/x
  3. Step 3: Cross multiply
    360.15x = 496.49 × 305.07
  4. Step 4: Simplify right side
    360.15x = 151,464.20
  5. Step 5: Solve for x
    x = 151,464.20/360.15
  6. Step 6: Final answer
    x = 420.56

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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.