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Finding the Fourth Proportional to 617.11, 929.83 and 550.79

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Solution

The fourth proportional to 617.11, 929.83 and 550.79 is: 829.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.11 : 929.83 = 550.79 : x
  2. Step 2: Convert to fraction form
    617.11/929.83 = 550.79/x
  3. Step 3: Cross multiply
    617.11x = 929.83 × 550.79
  4. Step 4: Simplify right side
    617.11x = 512,141.07
  5. Step 5: Solve for x
    x = 512,141.07/617.11
  6. Step 6: Final answer
    x = 829.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.