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Finding the Fourth Proportional to 1,326.68, 1,990.22 and 504.94

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Solution

The fourth proportional to 1,326.68, 1,990.22 and 504.94 is: 757.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.68 : 1,990.22 = 504.94 : x
  2. Step 2: Convert to fraction form
    1,326.68/1,990.22 = 504.94/x
  3. Step 3: Cross multiply
    1,326.68x = 1,990.22 × 504.94
  4. Step 4: Simplify right side
    1,326.68x = 1,004,941.69
  5. Step 5: Solve for x
    x = 1,004,941.69/1,326.68
  6. Step 6: Final answer
    x = 757.49

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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.