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Finding the Fourth Proportional to 1,332.42, 1,998.11 and 395.11

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Solution

The fourth proportional to 1,332.42, 1,998.11 and 395.11 is: 592.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.42 : 1,998.11 = 395.11 : x
  2. Step 2: Convert to fraction form
    1,332.42/1,998.11 = 395.11/x
  3. Step 3: Cross multiply
    1,332.42x = 1,998.11 × 395.11
  4. Step 4: Simplify right side
    1,332.42x = 789,469.23
  5. Step 5: Solve for x
    x = 789,469.23/1,332.42
  6. Step 6: Final answer
    x = 592.51

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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.