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Finding the Fourth Proportional to 179.03, 246.98 and 105.31

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Solution

The fourth proportional to 179.03, 246.98 and 105.31 is: 145.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    179.03 : 246.98 = 105.31 : x
  2. Step 2: Convert to fraction form
    179.03/246.98 = 105.31/x
  3. Step 3: Cross multiply
    179.03x = 246.98 × 105.31
  4. Step 4: Simplify right side
    179.03x = 26,008.94
  5. Step 5: Solve for x
    x = 26,008.94/179.03
  6. Step 6: Final answer
    x = 145.28

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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.