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Finding the Fourth Proportional to 50.39, 75.23 and 50.05

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Solution

The fourth proportional to 50.39, 75.23 and 50.05 is: 74.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.39 : 75.23 = 50.05 : x
  2. Step 2: Convert to fraction form
    50.39/75.23 = 50.05/x
  3. Step 3: Cross multiply
    50.39x = 75.23 × 50.05
  4. Step 4: Simplify right side
    50.39x = 3,765.26
  5. Step 5: Solve for x
    x = 3,765.26/50.39
  6. Step 6: Final answer
    x = 74.72

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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.