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Finding the Fourth Proportional to 450.82, 620.52 and 376.30

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Solution

The fourth proportional to 450.82, 620.52 and 376.30 is: 517.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.82 : 620.52 = 376.30 : x
  2. Step 2: Convert to fraction form
    450.82/620.52 = 376.30/x
  3. Step 3: Cross multiply
    450.82x = 620.52 × 376.30
  4. Step 4: Simplify right side
    450.82x = 233,501.68
  5. Step 5: Solve for x
    x = 233,501.68/450.82
  6. Step 6: Final answer
    x = 517.95

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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.