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Finding the Fourth Proportional to 450.28, 620.60 and 302.84

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Solution

The fourth proportional to 450.28, 620.60 and 302.84 is: 417.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.28 : 620.60 = 302.84 : x
  2. Step 2: Convert to fraction form
    450.28/620.60 = 302.84/x
  3. Step 3: Cross multiply
    450.28x = 620.60 × 302.84
  4. Step 4: Simplify right side
    450.28x = 187,942.50
  5. Step 5: Solve for x
    x = 187,942.50/450.28
  6. Step 6: Final answer
    x = 417.39

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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.