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Finding the Fourth Proportional to 472.07, 708.20 and 163.88

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Solution

The fourth proportional to 472.07, 708.20 and 163.88 is: 245.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.07 : 708.20 = 163.88 : x
  2. Step 2: Convert to fraction form
    472.07/708.20 = 163.88/x
  3. Step 3: Cross multiply
    472.07x = 708.20 × 163.88
  4. Step 4: Simplify right side
    472.07x = 116,055.46
  5. Step 5: Solve for x
    x = 116,055.46/472.07
  6. Step 6: Final answer
    x = 245.85

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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.