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Finding the Fourth Proportional to 300.53, 450.43 and 239.42

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Solution

The fourth proportional to 300.53, 450.43 and 239.42 is: 358.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.53 : 450.43 = 239.42 : x
  2. Step 2: Convert to fraction form
    300.53/450.43 = 239.42/x
  3. Step 3: Cross multiply
    300.53x = 450.43 × 239.42
  4. Step 4: Simplify right side
    300.53x = 107,841.95
  5. Step 5: Solve for x
    x = 107,841.95/300.53
  6. Step 6: Final answer
    x = 358.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.