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Finding the Fourth Proportional to 51.36, 71.28 and 50.60

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Solution

The fourth proportional to 51.36, 71.28 and 50.60 is: 70.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.36 : 71.28 = 50.60 : x
  2. Step 2: Convert to fraction form
    51.36/71.28 = 50.60/x
  3. Step 3: Cross multiply
    51.36x = 71.28 × 50.60
  4. Step 4: Simplify right side
    51.36x = 3,606.77
  5. Step 5: Solve for x
    x = 3,606.77/51.36
  6. Step 6: Final answer
    x = 70.23

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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.