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Finding the Fourth Proportional to 114.50, 171.78 and 50.38

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Solution

The fourth proportional to 114.50, 171.78 and 50.38 is: 75.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.50 : 171.78 = 50.38 : x
  2. Step 2: Convert to fraction form
    114.50/171.78 = 50.38/x
  3. Step 3: Cross multiply
    114.50x = 171.78 × 50.38
  4. Step 4: Simplify right side
    114.50x = 8,653.17
  5. Step 5: Solve for x
    x = 8,653.17/114.50
  6. Step 6: Final answer
    x = 75.57

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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.