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Finding the Fourth Proportional to 300.24, 415.10 and 287.33

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Solution

The fourth proportional to 300.24, 415.10 and 287.33 is: 397.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.24 : 415.10 = 287.33 : x
  2. Step 2: Convert to fraction form
    300.24/415.10 = 287.33/x
  3. Step 3: Cross multiply
    300.24x = 415.10 × 287.33
  4. Step 4: Simplify right side
    300.24x = 119,269.33
  5. Step 5: Solve for x
    x = 119,269.33/300.24
  6. Step 6: Final answer
    x = 397.25

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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.