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Finding the Fourth Proportional to 166.30, 250.70 and 159.10

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Solution

The fourth proportional to 166.30, 250.70 and 159.10 is: 239.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.30 : 250.70 = 159.10 : x
  2. Step 2: Convert to fraction form
    166.30/250.70 = 159.10/x
  3. Step 3: Cross multiply
    166.30x = 250.70 × 159.10
  4. Step 4: Simplify right side
    166.30x = 39,886.37
  5. Step 5: Solve for x
    x = 39,886.37/166.30
  6. Step 6: Final answer
    x = 239.85

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.