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Finding the Fourth Proportional to 171.25, 255.55 and 153.03

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Solution

The fourth proportional to 171.25, 255.55 and 153.03 is: 228.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.25 : 255.55 = 153.03 : x
  2. Step 2: Convert to fraction form
    171.25/255.55 = 153.03/x
  3. Step 3: Cross multiply
    171.25x = 255.55 × 153.03
  4. Step 4: Simplify right side
    171.25x = 39,106.82
  5. Step 5: Solve for x
    x = 39,106.82/171.25
  6. Step 6: Final answer
    x = 228.36

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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.