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Finding the Fourth Proportional to 952.36, 1,428.46 and 646.18

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Solution

The fourth proportional to 952.36, 1,428.46 and 646.18 is: 969.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.36 : 1,428.46 = 646.18 : x
  2. Step 2: Convert to fraction form
    952.36/1,428.46 = 646.18/x
  3. Step 3: Cross multiply
    952.36x = 1,428.46 × 646.18
  4. Step 4: Simplify right side
    952.36x = 923,042.28
  5. Step 5: Solve for x
    x = 923,042.28/952.36
  6. Step 6: Final answer
    x = 969.22

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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.