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Finding the Fourth Proportional to 696.10, 960.60 and 385.60

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Solution

The fourth proportional to 696.10, 960.60 and 385.60 is: 532.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.10 : 960.60 = 385.60 : x
  2. Step 2: Convert to fraction form
    696.10/960.60 = 385.60/x
  3. Step 3: Cross multiply
    696.10x = 960.60 × 385.60
  4. Step 4: Simplify right side
    696.10x = 370,407.36
  5. Step 5: Solve for x
    x = 370,407.36/696.10
  6. Step 6: Final answer
    x = 532.12

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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.