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Finding the Fourth Proportional to 130.07, 179.48 and 80.25

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Solution

The fourth proportional to 130.07, 179.48 and 80.25 is: 110.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.07 : 179.48 = 80.25 : x
  2. Step 2: Convert to fraction form
    130.07/179.48 = 80.25/x
  3. Step 3: Cross multiply
    130.07x = 179.48 × 80.25
  4. Step 4: Simplify right side
    130.07x = 14,402.87
  5. Step 5: Solve for x
    x = 14,402.87/130.07
  6. Step 6: Final answer
    x = 110.74

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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.