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Finding the Fourth Proportional to 50.63, 70.36 and 49.99

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Solution

The fourth proportional to 50.63, 70.36 and 49.99 is: 69.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.63 : 70.36 = 49.99 : x
  2. Step 2: Convert to fraction form
    50.63/70.36 = 49.99/x
  3. Step 3: Cross multiply
    50.63x = 70.36 × 49.99
  4. Step 4: Simplify right side
    50.63x = 3,516.87
  5. Step 5: Solve for x
    x = 3,516.87/50.63
  6. Step 6: Final answer
    x = 69.46

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.