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Finding the Fourth Proportional to 694.87, 959.05 and 400.32

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Solution

The fourth proportional to 694.87, 959.05 and 400.32 is: 552.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.87 : 959.05 = 400.32 : x
  2. Step 2: Convert to fraction form
    694.87/959.05 = 400.32/x
  3. Step 3: Cross multiply
    694.87x = 959.05 × 400.32
  4. Step 4: Simplify right side
    694.87x = 383,921.10
  5. Step 5: Solve for x
    x = 383,921.10/694.87
  6. Step 6: Final answer
    x = 552.51

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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.