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Finding the Fourth Proportional to 235.56, 324.87 and 188.85

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Solution

The fourth proportional to 235.56, 324.87 and 188.85 is: 260.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    235.56 : 324.87 = 188.85 : x
  2. Step 2: Convert to fraction form
    235.56/324.87 = 188.85/x
  3. Step 3: Cross multiply
    235.56x = 324.87 × 188.85
  4. Step 4: Simplify right side
    235.56x = 61,351.70
  5. Step 5: Solve for x
    x = 61,351.70/235.56
  6. Step 6: Final answer
    x = 260.45

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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.