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Finding the Fourth Proportional to 422.59, 633.87 and 130.08

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Solution

The fourth proportional to 422.59, 633.87 and 130.08 is: 195.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.59 : 633.87 = 130.08 : x
  2. Step 2: Convert to fraction form
    422.59/633.87 = 130.08/x
  3. Step 3: Cross multiply
    422.59x = 633.87 × 130.08
  4. Step 4: Simplify right side
    422.59x = 82,453.81
  5. Step 5: Solve for x
    x = 82,453.81/422.59
  6. Step 6: Final answer
    x = 195.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.