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Finding the Fourth Proportional to 701.81, 968.49 and 387.09

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Solution

The fourth proportional to 701.81, 968.49 and 387.09 is: 534.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.81 : 968.49 = 387.09 : x
  2. Step 2: Convert to fraction form
    701.81/968.49 = 387.09/x
  3. Step 3: Cross multiply
    701.81x = 968.49 × 387.09
  4. Step 4: Simplify right side
    701.81x = 374,891.34
  5. Step 5: Solve for x
    x = 374,891.34/701.81
  6. Step 6: Final answer
    x = 534.18

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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.