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Finding the Fourth Proportional to 1,324.41, 1,986.71 and 350.50

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Solution

The fourth proportional to 1,324.41, 1,986.71 and 350.50 is: 525.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.41 : 1,986.71 = 350.50 : x
  2. Step 2: Convert to fraction form
    1,324.41/1,986.71 = 350.50/x
  3. Step 3: Cross multiply
    1,324.41x = 1,986.71 × 350.50
  4. Step 4: Simplify right side
    1,324.41x = 696,341.86
  5. Step 5: Solve for x
    x = 696,341.86/1,324.41
  6. Step 6: Final answer
    x = 525.78

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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.