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Finding the Fourth Proportional to 705.04, 972.92 and 394.48

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Solution

The fourth proportional to 705.04, 972.92 and 394.48 is: 544.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    705.04 : 972.92 = 394.48 : x
  2. Step 2: Convert to fraction form
    705.04/972.92 = 394.48/x
  3. Step 3: Cross multiply
    705.04x = 972.92 × 394.48
  4. Step 4: Simplify right side
    705.04x = 383,797.48
  5. Step 5: Solve for x
    x = 383,797.48/705.04
  6. Step 6: Final answer
    x = 544.36

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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.