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Finding the Fourth Proportional to 450.86, 676.29 and 126.26

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Solution

The fourth proportional to 450.86, 676.29 and 126.26 is: 189.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.86 : 676.29 = 126.26 : x
  2. Step 2: Convert to fraction form
    450.86/676.29 = 126.26/x
  3. Step 3: Cross multiply
    450.86x = 676.29 × 126.26
  4. Step 4: Simplify right side
    450.86x = 85,384.99
  5. Step 5: Solve for x
    x = 85,384.99/450.86
  6. Step 6: Final answer
    x = 189.38

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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.