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Finding the Fourth Proportional to 245.44, 368.31 and 129.97

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Solution

The fourth proportional to 245.44, 368.31 and 129.97 is: 195.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.44 : 368.31 = 129.97 : x
  2. Step 2: Convert to fraction form
    245.44/368.31 = 129.97/x
  3. Step 3: Cross multiply
    245.44x = 368.31 × 129.97
  4. Step 4: Simplify right side
    245.44x = 47,870.20
  5. Step 5: Solve for x
    x = 47,870.20/245.44
  6. Step 6: Final answer
    x = 195.04

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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.