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Finding the Fourth Proportional to 171.69, 237.08 and 142.16

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Solution

The fourth proportional to 171.69, 237.08 and 142.16 is: 196.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.69 : 237.08 = 142.16 : x
  2. Step 2: Convert to fraction form
    171.69/237.08 = 142.16/x
  3. Step 3: Cross multiply
    171.69x = 237.08 × 142.16
  4. Step 4: Simplify right side
    171.69x = 33,701.66
  5. Step 5: Solve for x
    x = 33,701.66/171.69
  6. Step 6: Final answer
    x = 196.29

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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.