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Finding the Fourth Proportional to 166.91, 250.25 and 64.17

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Solution

The fourth proportional to 166.91, 250.25 and 64.17 is: 96.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.91 : 250.25 = 64.17 : x
  2. Step 2: Convert to fraction form
    166.91/250.25 = 64.17/x
  3. Step 3: Cross multiply
    166.91x = 250.25 × 64.17
  4. Step 4: Simplify right side
    166.91x = 16,058.22
  5. Step 5: Solve for x
    x = 16,058.22/166.91
  6. Step 6: Final answer
    x = 96.21

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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.