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Finding the Fourth Proportional to 553.37, 829.91 and 206.73

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Solution

The fourth proportional to 553.37, 829.91 and 206.73 is: 310.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.37 : 829.91 = 206.73 : x
  2. Step 2: Convert to fraction form
    553.37/829.91 = 206.73/x
  3. Step 3: Cross multiply
    553.37x = 829.91 × 206.73
  4. Step 4: Simplify right side
    553.37x = 171,567.81
  5. Step 5: Solve for x
    x = 171,567.81/553.37
  6. Step 6: Final answer
    x = 310.04

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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.