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Finding the Fourth Proportional to 952.63, 1,428.13 and 693.43

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Solution

The fourth proportional to 952.63, 1,428.13 and 693.43 is: 1,039.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.63 : 1,428.13 = 693.43 : x
  2. Step 2: Convert to fraction form
    952.63/1,428.13 = 693.43/x
  3. Step 3: Cross multiply
    952.63x = 1,428.13 × 693.43
  4. Step 4: Simplify right side
    952.63x = 990,305.48
  5. Step 5: Solve for x
    x = 990,305.48/952.63
  6. Step 6: Final answer
    x = 1,039.55

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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.