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Finding the Fourth Proportional to 472.30, 708.11 and 179.78

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Solution

The fourth proportional to 472.30, 708.11 and 179.78 is: 269.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.30 : 708.11 = 179.78 : x
  2. Step 2: Convert to fraction form
    472.30/708.11 = 179.78/x
  3. Step 3: Cross multiply
    472.30x = 708.11 × 179.78
  4. Step 4: Simplify right side
    472.30x = 127,304.02
  5. Step 5: Solve for x
    x = 127,304.02/472.30
  6. Step 6: Final answer
    x = 269.54

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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.