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Finding the Fourth Proportional to 235.44, 353.16 and 187.65

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Solution

The fourth proportional to 235.44, 353.16 and 187.65 is: 281.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.44 : 353.16 = 187.65 : x
  2. Step 2: Convert to fraction form
    235.44/353.16 = 187.65/x
  3. Step 3: Cross multiply
    235.44x = 353.16 × 187.65
  4. Step 4: Simplify right side
    235.44x = 66,270.47
  5. Step 5: Solve for x
    x = 66,270.47/235.44
  6. Step 6: Final answer
    x = 281.48

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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.