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Finding the Fourth Proportional to 168.33, 251.27 and 156.76

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Solution

The fourth proportional to 168.33, 251.27 and 156.76 is: 234.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.33 : 251.27 = 156.76 : x
  2. Step 2: Convert to fraction form
    168.33/251.27 = 156.76/x
  3. Step 3: Cross multiply
    168.33x = 251.27 × 156.76
  4. Step 4: Simplify right side
    168.33x = 39,389.09
  5. Step 5: Solve for x
    x = 39,389.09/168.33
  6. Step 6: Final answer
    x = 234.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.