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Finding the Fourth Proportional to 171.53, 255.89 and 158.63

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Solution

The fourth proportional to 171.53, 255.89 and 158.63 is: 236.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.53 : 255.89 = 158.63 : x
  2. Step 2: Convert to fraction form
    171.53/255.89 = 158.63/x
  3. Step 3: Cross multiply
    171.53x = 255.89 × 158.63
  4. Step 4: Simplify right side
    171.53x = 40,590.06
  5. Step 5: Solve for x
    x = 40,590.06/171.53
  6. Step 6: Final answer
    x = 236.63

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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.