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Finding the Fourth Proportional to 51.70, 71.64 and 50.62

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Solution

The fourth proportional to 51.70, 71.64 and 50.62 is: 70.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.70 : 71.64 = 50.62 : x
  2. Step 2: Convert to fraction form
    51.70/71.64 = 50.62/x
  3. Step 3: Cross multiply
    51.70x = 71.64 × 50.62
  4. Step 4: Simplify right side
    51.70x = 3,626.42
  5. Step 5: Solve for x
    x = 3,626.42/51.70
  6. Step 6: Final answer
    x = 70.14

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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.