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Finding the Fourth Proportional to 328.82, 453.86 and 188.98

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Solution

The fourth proportional to 328.82, 453.86 and 188.98 is: 260.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.82 : 453.86 = 188.98 : x
  2. Step 2: Convert to fraction form
    328.82/453.86 = 188.98/x
  3. Step 3: Cross multiply
    328.82x = 453.86 × 188.98
  4. Step 4: Simplify right side
    328.82x = 85,770.46
  5. Step 5: Solve for x
    x = 85,770.46/328.82
  6. Step 6: Final answer
    x = 260.84

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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.