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Finding the Fourth Proportional to 300.61, 415.38 and 235.61

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Solution

The fourth proportional to 300.61, 415.38 and 235.61 is: 325.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.61 : 415.38 = 235.61 : x
  2. Step 2: Convert to fraction form
    300.61/415.38 = 235.61/x
  3. Step 3: Cross multiply
    300.61x = 415.38 × 235.61
  4. Step 4: Simplify right side
    300.61x = 97,866.72
  5. Step 5: Solve for x
    x = 97,866.72/300.61
  6. Step 6: Final answer
    x = 325.56

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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.