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Finding the Fourth Proportional to 328.29, 453.02 and 188.43

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Solution

The fourth proportional to 328.29, 453.02 and 188.43 is: 260.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.29 : 453.02 = 188.43 : x
  2. Step 2: Convert to fraction form
    328.29/453.02 = 188.43/x
  3. Step 3: Cross multiply
    328.29x = 453.02 × 188.43
  4. Step 4: Simplify right side
    328.29x = 85,362.56
  5. Step 5: Solve for x
    x = 85,362.56/328.29
  6. Step 6: Final answer
    x = 260.02

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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.