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Finding the Fourth Proportional to 936.08, 1,393.36 and 922.22

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Solution

The fourth proportional to 936.08, 1,393.36 and 922.22 is: 1,372.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    936.08 : 1,393.36 = 922.22 : x
  2. Step 2: Convert to fraction form
    936.08/1,393.36 = 922.22/x
  3. Step 3: Cross multiply
    936.08x = 1,393.36 × 922.22
  4. Step 4: Simplify right side
    936.08x = 1,284,984.46
  5. Step 5: Solve for x
    x = 1,284,984.46/936.08
  6. Step 6: Final answer
    x = 1,372.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.