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Finding the Fourth Proportional to 130.06, 179.49 and 80.28

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Solution

The fourth proportional to 130.06, 179.49 and 80.28 is: 110.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.06 : 179.49 = 80.28 : x
  2. Step 2: Convert to fraction form
    130.06/179.49 = 80.28/x
  3. Step 3: Cross multiply
    130.06x = 179.49 × 80.28
  4. Step 4: Simplify right side
    130.06x = 14,409.46
  5. Step 5: Solve for x
    x = 14,409.46/130.06
  6. Step 6: Final answer
    x = 110.79

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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.