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Finding the Fourth Proportional to 168.26, 253.66 and 156.50

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Solution

The fourth proportional to 168.26, 253.66 and 156.50 is: 235.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.26 : 253.66 = 156.50 : x
  2. Step 2: Convert to fraction form
    168.26/253.66 = 156.50/x
  3. Step 3: Cross multiply
    168.26x = 253.66 × 156.50
  4. Step 4: Simplify right side
    168.26x = 39,697.79
  5. Step 5: Solve for x
    x = 39,697.79/168.26
  6. Step 6: Final answer
    x = 235.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.