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Finding the Fourth Proportional to 166.26, 248.18 and 155.58

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Solution

The fourth proportional to 166.26, 248.18 and 155.58 is: 232.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.26 : 248.18 = 155.58 : x
  2. Step 2: Convert to fraction form
    166.26/248.18 = 155.58/x
  3. Step 3: Cross multiply
    166.26x = 248.18 × 155.58
  4. Step 4: Simplify right side
    166.26x = 38,611.07
  5. Step 5: Solve for x
    x = 38,611.07/166.26
  6. Step 6: Final answer
    x = 232.23

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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.