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Finding the Fourth Proportional to 168.19, 250.75 and 157.86

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Solution

The fourth proportional to 168.19, 250.75 and 157.86 is: 235.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.19 : 250.75 = 157.86 : x
  2. Step 2: Convert to fraction form
    168.19/250.75 = 157.86/x
  3. Step 3: Cross multiply
    168.19x = 250.75 × 157.86
  4. Step 4: Simplify right side
    168.19x = 39,583.59
  5. Step 5: Solve for x
    x = 39,583.59/168.19
  6. Step 6: Final answer
    x = 235.35

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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.