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Finding the Fourth Proportional to 696.02, 960.54 and 401.30

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Solution

The fourth proportional to 696.02, 960.54 and 401.30 is: 553.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    696.02 : 960.54 = 401.30 : x
  2. Step 2: Convert to fraction form
    696.02/960.54 = 401.30/x
  3. Step 3: Cross multiply
    696.02x = 960.54 × 401.30
  4. Step 4: Simplify right side
    696.02x = 385,464.70
  5. Step 5: Solve for x
    x = 385,464.70/696.02
  6. Step 6: Final answer
    x = 553.81

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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.