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Finding the Fourth Proportional to 100.44, 150.53 and 38.75

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Solution

The fourth proportional to 100.44, 150.53 and 38.75 is: 58.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100.44 : 150.53 = 38.75 : x
  2. Step 2: Convert to fraction form
    100.44/150.53 = 38.75/x
  3. Step 3: Cross multiply
    100.44x = 150.53 × 38.75
  4. Step 4: Simplify right side
    100.44x = 5,832.09
  5. Step 5: Solve for x
    x = 5,832.09/100.44
  6. Step 6: Final answer
    x = 58.07

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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.