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Finding the Fourth Proportional to 50.43, 75.30 and 38.42

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Solution

The fourth proportional to 50.43, 75.30 and 38.42 is: 57.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.43 : 75.30 = 38.42 : x
  2. Step 2: Convert to fraction form
    50.43/75.30 = 38.42/x
  3. Step 3: Cross multiply
    50.43x = 75.30 × 38.42
  4. Step 4: Simplify right side
    50.43x = 2,892.65
  5. Step 5: Solve for x
    x = 2,892.65/50.43
  6. Step 6: Final answer
    x = 57.36

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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.