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Finding the Fourth Proportional to 694.04, 957.65 and 395.28

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Solution

The fourth proportional to 694.04, 957.65 and 395.28 is: 545.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.04 : 957.65 = 395.28 : x
  2. Step 2: Convert to fraction form
    694.04/957.65 = 395.28/x
  3. Step 3: Cross multiply
    694.04x = 957.65 × 395.28
  4. Step 4: Simplify right side
    694.04x = 378,537.92
  5. Step 5: Solve for x
    x = 378,537.92/694.04
  6. Step 6: Final answer
    x = 545.42

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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.