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Finding the Fourth Proportional to 171.51, 257.31 and 63.33

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Solution

The fourth proportional to 171.51, 257.31 and 63.33 is: 95.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.51 : 257.31 = 63.33 : x
  2. Step 2: Convert to fraction form
    171.51/257.31 = 63.33/x
  3. Step 3: Cross multiply
    171.51x = 257.31 × 63.33
  4. Step 4: Simplify right side
    171.51x = 16,295.44
  5. Step 5: Solve for x
    x = 16,295.44/171.51
  6. Step 6: Final answer
    x = 95.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.