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Finding the Fourth Proportional to 960.47, 1,440.43 and 335.83

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Solution

The fourth proportional to 960.47, 1,440.43 and 335.83 is: 503.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    960.47 : 1,440.43 = 335.83 : x
  2. Step 2: Convert to fraction form
    960.47/1,440.43 = 335.83/x
  3. Step 3: Cross multiply
    960.47x = 1,440.43 × 335.83
  4. Step 4: Simplify right side
    960.47x = 483,739.61
  5. Step 5: Solve for x
    x = 483,739.61/960.47
  6. Step 6: Final answer
    x = 503.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.