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Finding the Fourth Proportional to 701.61, 968.16 and 386.82

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Solution

The fourth proportional to 701.61, 968.16 and 386.82 is: 533.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.61 : 968.16 = 386.82 : x
  2. Step 2: Convert to fraction form
    701.61/968.16 = 386.82/x
  3. Step 3: Cross multiply
    701.61x = 968.16 × 386.82
  4. Step 4: Simplify right side
    701.61x = 374,503.65
  5. Step 5: Solve for x
    x = 374,503.65/701.61
  6. Step 6: Final answer
    x = 533.78

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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.