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Finding the Fourth Proportional to 952.43, 1,428.89 and 327.74

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Solution

The fourth proportional to 952.43, 1,428.89 and 327.74 is: 491.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.43 : 1,428.89 = 327.74 : x
  2. Step 2: Convert to fraction form
    952.43/1,428.89 = 327.74/x
  3. Step 3: Cross multiply
    952.43x = 1,428.89 × 327.74
  4. Step 4: Simplify right side
    952.43x = 468,303.66
  5. Step 5: Solve for x
    x = 468,303.66/952.43
  6. Step 6: Final answer
    x = 491.69

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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.