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Finding the Fourth Proportional to 166.16, 247.60 and 155.36

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Solution

The fourth proportional to 166.16, 247.60 and 155.36 is: 231.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.16 : 247.60 = 155.36 : x
  2. Step 2: Convert to fraction form
    166.16/247.60 = 155.36/x
  3. Step 3: Cross multiply
    166.16x = 247.60 × 155.36
  4. Step 4: Simplify right side
    166.16x = 38,467.14
  5. Step 5: Solve for x
    x = 38,467.14/166.16
  6. Step 6: Final answer
    x = 231.51

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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.