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Finding the Fourth Proportional to 105.37, 157.94 and 40.33

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Solution

The fourth proportional to 105.37, 157.94 and 40.33 is: 60.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105.37 : 157.94 = 40.33 : x
  2. Step 2: Convert to fraction form
    105.37/157.94 = 40.33/x
  3. Step 3: Cross multiply
    105.37x = 157.94 × 40.33
  4. Step 4: Simplify right side
    105.37x = 6,369.72
  5. Step 5: Solve for x
    x = 6,369.72/105.37
  6. Step 6: Final answer
    x = 60.45

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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.