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Finding the Fourth Proportional to 450.72, 620.64 and 363.04

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Solution

The fourth proportional to 450.72, 620.64 and 363.04 is: 499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.72 : 620.64 = 363.04 : x
  2. Step 2: Convert to fraction form
    450.72/620.64 = 363.04/x
  3. Step 3: Cross multiply
    450.72x = 620.64 × 363.04
  4. Step 4: Simplify right side
    450.72x = 225,317.15
  5. Step 5: Solve for x
    x = 225,317.15/450.72
  6. Step 6: Final answer
    x = 499.90

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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.