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Finding the Fourth Proportional to 166.81, 250.23 and 70.63

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Solution

The fourth proportional to 166.81, 250.23 and 70.63 is: 105.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.81 : 250.23 = 70.63 : x
  2. Step 2: Convert to fraction form
    166.81/250.23 = 70.63/x
  3. Step 3: Cross multiply
    166.81x = 250.23 × 70.63
  4. Step 4: Simplify right side
    166.81x = 17,673.74
  5. Step 5: Solve for x
    x = 17,673.74/166.81
  6. Step 6: Final answer
    x = 105.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.