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Finding the Fourth Proportional to 1,326.53, 1,989.92 and 504.59

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Solution

The fourth proportional to 1,326.53, 1,989.92 and 504.59 is: 756.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.53 : 1,989.92 = 504.59 : x
  2. Step 2: Convert to fraction form
    1,326.53/1,989.92 = 504.59/x
  3. Step 3: Cross multiply
    1,326.53x = 1,989.92 × 504.59
  4. Step 4: Simplify right side
    1,326.53x = 1,004,085.04
  5. Step 5: Solve for x
    x = 1,004,085.04/1,326.53
  6. Step 6: Final answer
    x = 756.92

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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.