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Finding the Fourth Proportional to 701.44, 967.98 and 390.94

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Solution

The fourth proportional to 701.44, 967.98 and 390.94 is: 539.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.44 : 967.98 = 390.94 : x
  2. Step 2: Convert to fraction form
    701.44/967.98 = 390.94/x
  3. Step 3: Cross multiply
    701.44x = 967.98 × 390.94
  4. Step 4: Simplify right side
    701.44x = 378,421.15
  5. Step 5: Solve for x
    x = 378,421.15/701.44
  6. Step 6: Final answer
    x = 539.49

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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.