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Finding the Fourth Proportional to 300.79, 451 and 118.24

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Solution

The fourth proportional to 300.79, 451 and 118.24 is: 177.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.79 : 451 = 118.24 : x
  2. Step 2: Convert to fraction form
    300.79/451 = 118.24/x
  3. Step 3: Cross multiply
    300.79x = 451 × 118.24
  4. Step 4: Simplify right side
    300.79x = 53,326.24
  5. Step 5: Solve for x
    x = 53,326.24/300.79
  6. Step 6: Final answer
    x = 177.29

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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.