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Finding the Fourth Proportional to 960.54, 1,325.49 and 629.07

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Solution

The fourth proportional to 960.54, 1,325.49 and 629.07 is: 868.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.54 : 1,325.49 = 629.07 : x
  2. Step 2: Convert to fraction form
    960.54/1,325.49 = 629.07/x
  3. Step 3: Cross multiply
    960.54x = 1,325.49 × 629.07
  4. Step 4: Simplify right side
    960.54x = 833,825.99
  5. Step 5: Solve for x
    x = 833,825.99/960.54
  6. Step 6: Final answer
    x = 868.08

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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.