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Finding the Fourth Proportional to 450.60, 621.48 and 303

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Solution

The fourth proportional to 450.60, 621.48 and 303 is: 417.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.60 : 621.48 = 303 : x
  2. Step 2: Convert to fraction form
    450.60/621.48 = 303/x
  3. Step 3: Cross multiply
    450.60x = 621.48 × 303
  4. Step 4: Simplify right side
    450.60x = 188,308.44
  5. Step 5: Solve for x
    x = 188,308.44/450.60
  6. Step 6: Final answer
    x = 417.91

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.