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Finding the Fourth Proportional to 696.14, 960.58 and 397.28

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Solution

The fourth proportional to 696.14, 960.58 and 397.28 is: 548.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.14 : 960.58 = 397.28 : x
  2. Step 2: Convert to fraction form
    696.14/960.58 = 397.28/x
  3. Step 3: Cross multiply
    696.14x = 960.58 × 397.28
  4. Step 4: Simplify right side
    696.14x = 381,619.22
  5. Step 5: Solve for x
    x = 381,619.22/696.14
  6. Step 6: Final answer
    x = 548.19

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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.