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Finding the Fourth Proportional to 275.08, 412.41 and 130.63

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Solution

The fourth proportional to 275.08, 412.41 and 130.63 is: 195.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.08 : 412.41 = 130.63 : x
  2. Step 2: Convert to fraction form
    275.08/412.41 = 130.63/x
  3. Step 3: Cross multiply
    275.08x = 412.41 × 130.63
  4. Step 4: Simplify right side
    275.08x = 53,873.12
  5. Step 5: Solve for x
    x = 53,873.12/275.08
  6. Step 6: Final answer
    x = 195.85

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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.