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Finding the Fourth Proportional to 992.32, 1,369.26 and 550.23

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Solution

The fourth proportional to 992.32, 1,369.26 and 550.23 is: 759.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    992.32 : 1,369.26 = 550.23 : x
  2. Step 2: Convert to fraction form
    992.32/1,369.26 = 550.23/x
  3. Step 3: Cross multiply
    992.32x = 1,369.26 × 550.23
  4. Step 4: Simplify right side
    992.32x = 753,405.36
  5. Step 5: Solve for x
    x = 753,405.36/992.32
  6. Step 6: Final answer
    x = 759.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.