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Finding the Fourth Proportional to 477.94, 716.79 and 203.89

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Solution

The fourth proportional to 477.94, 716.79 and 203.89 is: 305.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    477.94 : 716.79 = 203.89 : x
  2. Step 2: Convert to fraction form
    477.94/716.79 = 203.89/x
  3. Step 3: Cross multiply
    477.94x = 716.79 × 203.89
  4. Step 4: Simplify right side
    477.94x = 146,146.31
  5. Step 5: Solve for x
    x = 146,146.31/477.94
  6. Step 6: Final answer
    x = 305.78

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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.