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Finding the Fourth Proportional to 210.80, 315.63 and 167.27

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Solution

The fourth proportional to 210.80, 315.63 and 167.27 is: 250.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    210.80 : 315.63 = 167.27 : x
  2. Step 2: Convert to fraction form
    210.80/315.63 = 167.27/x
  3. Step 3: Cross multiply
    210.80x = 315.63 × 167.27
  4. Step 4: Simplify right side
    210.80x = 52,793.85
  5. Step 5: Solve for x
    x = 52,793.85/210.80
  6. Step 6: Final answer
    x = 250.44

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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.