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Finding the Fourth Proportional to 171.84, 259 and 161.36

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Solution

The fourth proportional to 171.84, 259 and 161.36 is: 243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.84 : 259 = 161.36 : x
  2. Step 2: Convert to fraction form
    171.84/259 = 161.36/x
  3. Step 3: Cross multiply
    171.84x = 259 × 161.36
  4. Step 4: Simplify right side
    171.84x = 41,792.24
  5. Step 5: Solve for x
    x = 41,792.24/171.84
  6. Step 6: Final answer
    x = 243.20

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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.