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Finding the Fourth Proportional to 130.59, 179.67 and 113.05

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Solution

The fourth proportional to 130.59, 179.67 and 113.05 is: 155.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.59 : 179.67 = 113.05 : x
  2. Step 2: Convert to fraction form
    130.59/179.67 = 113.05/x
  3. Step 3: Cross multiply
    130.59x = 179.67 × 113.05
  4. Step 4: Simplify right side
    130.59x = 20,311.69
  5. Step 5: Solve for x
    x = 20,311.69/130.59
  6. Step 6: Final answer
    x = 155.54

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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.