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Finding the Fourth Proportional to 952.92, 1,318.64 and 812.82

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Solution

The fourth proportional to 952.92, 1,318.64 and 812.82 is: 1,124.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.92 : 1,318.64 = 812.82 : x
  2. Step 2: Convert to fraction form
    952.92/1,318.64 = 812.82/x
  3. Step 3: Cross multiply
    952.92x = 1,318.64 × 812.82
  4. Step 4: Simplify right side
    952.92x = 1,071,816.96
  5. Step 5: Solve for x
    x = 1,071,816.96/952.92
  6. Step 6: Final answer
    x = 1,124.77

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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.