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Finding the Fourth Proportional to 701.53, 968.10 and 386.79

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Solution

The fourth proportional to 701.53, 968.10 and 386.79 is: 533.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.53 : 968.10 = 386.79 : x
  2. Step 2: Convert to fraction form
    701.53/968.10 = 386.79/x
  3. Step 3: Cross multiply
    701.53x = 968.10 × 386.79
  4. Step 4: Simplify right side
    701.53x = 374,451.40
  5. Step 5: Solve for x
    x = 374,451.40/701.53
  6. Step 6: Final answer
    x = 533.76

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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.