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Finding the Fourth Proportional to 166.66, 250.01 and 51.11

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Solution

The fourth proportional to 166.66, 250.01 and 51.11 is: 76.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.66 : 250.01 = 51.11 : x
  2. Step 2: Convert to fraction form
    166.66/250.01 = 51.11/x
  3. Step 3: Cross multiply
    166.66x = 250.01 × 51.11
  4. Step 4: Simplify right side
    166.66x = 12,776.51
  5. Step 5: Solve for x
    x = 12,776.51/166.66
  6. Step 6: Final answer
    x = 76.66

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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.