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Finding the Fourth Proportional to 450.77, 676.11 and 190.76

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Solution

The fourth proportional to 450.77, 676.11 and 190.76 is: 286.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.77 : 676.11 = 190.76 : x
  2. Step 2: Convert to fraction form
    450.77/676.11 = 190.76/x
  3. Step 3: Cross multiply
    450.77x = 676.11 × 190.76
  4. Step 4: Simplify right side
    450.77x = 128,972.08
  5. Step 5: Solve for x
    x = 128,972.08/450.77
  6. Step 6: Final answer
    x = 286.12

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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.