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Finding the Fourth Proportional to 171.22, 255.31 and 152.98

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Solution

The fourth proportional to 171.22, 255.31 and 152.98 is: 228.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.22 : 255.31 = 152.98 : x
  2. Step 2: Convert to fraction form
    171.22/255.31 = 152.98/x
  3. Step 3: Cross multiply
    171.22x = 255.31 × 152.98
  4. Step 4: Simplify right side
    171.22x = 39,057.32
  5. Step 5: Solve for x
    x = 39,057.32/171.22
  6. Step 6: Final answer
    x = 228.11

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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.