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Finding the Fourth Proportional to 171, 235.98 and 157.26

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Solution

The fourth proportional to 171, 235.98 and 157.26 is: 217.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    171 : 235.98 = 157.26 : x
  2. Step 2: Convert to fraction form
    171/235.98 = 157.26/x
  3. Step 3: Cross multiply
    171x = 235.98 × 157.26
  4. Step 4: Simplify right side
    171x = 37,110.21
  5. Step 5: Solve for x
    x = 37,110.21/171
  6. Step 6: Final answer
    x = 217.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.