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Finding the Fourth Proportional to 179.51, 247.96 and 140.66

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Solution

The fourth proportional to 179.51, 247.96 and 140.66 is: 194.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.51 : 247.96 = 140.66 : x
  2. Step 2: Convert to fraction form
    179.51/247.96 = 140.66/x
  3. Step 3: Cross multiply
    179.51x = 247.96 × 140.66
  4. Step 4: Simplify right side
    179.51x = 34,877.25
  5. Step 5: Solve for x
    x = 34,877.25/179.51
  6. Step 6: Final answer
    x = 194.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.