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Finding the Fourth Proportional to 701.79, 968.42 and 387.03

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Solution

The fourth proportional to 701.79, 968.42 and 387.03 is: 534.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.79 : 968.42 = 387.03 : x
  2. Step 2: Convert to fraction form
    701.79/968.42 = 387.03/x
  3. Step 3: Cross multiply
    701.79x = 968.42 × 387.03
  4. Step 4: Simplify right side
    701.79x = 374,805.66
  5. Step 5: Solve for x
    x = 374,805.66/701.79
  6. Step 6: Final answer
    x = 534.07

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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.