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Finding the Fourth Proportional to 477.85, 716.79 and 169.92

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Solution

The fourth proportional to 477.85, 716.79 and 169.92 is: 254.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.85 : 716.79 = 169.92 : x
  2. Step 2: Convert to fraction form
    477.85/716.79 = 169.92/x
  3. Step 3: Cross multiply
    477.85x = 716.79 × 169.92
  4. Step 4: Simplify right side
    477.85x = 121,796.96
  5. Step 5: Solve for x
    x = 121,796.96/477.85
  6. Step 6: Final answer
    x = 254.89

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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.