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Finding the Fourth Proportional to 328.52, 453.44 and 188.66

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Solution

The fourth proportional to 328.52, 453.44 and 188.66 is: 260.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.52 : 453.44 = 188.66 : x
  2. Step 2: Convert to fraction form
    328.52/453.44 = 188.66/x
  3. Step 3: Cross multiply
    328.52x = 453.44 × 188.66
  4. Step 4: Simplify right side
    328.52x = 85,546.18
  5. Step 5: Solve for x
    x = 85,546.18/328.52
  6. Step 6: Final answer
    x = 260.40

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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.