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Finding the Fourth Proportional to 701.33, 967.90 and 386.66

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Solution

The fourth proportional to 701.33, 967.90 and 386.66 is: 533.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.33 : 967.90 = 386.66 : x
  2. Step 2: Convert to fraction form
    701.33/967.90 = 386.66/x
  3. Step 3: Cross multiply
    701.33x = 967.90 × 386.66
  4. Step 4: Simplify right side
    701.33x = 374,248.21
  5. Step 5: Solve for x
    x = 374,248.21/701.33
  6. Step 6: Final answer
    x = 533.63

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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.