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Finding the Fourth Proportional to 51.07, 70.17 and 50.39

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Solution

The fourth proportional to 51.07, 70.17 and 50.39 is: 69.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.07 : 70.17 = 50.39 : x
  2. Step 2: Convert to fraction form
    51.07/70.17 = 50.39/x
  3. Step 3: Cross multiply
    51.07x = 70.17 × 50.39
  4. Step 4: Simplify right side
    51.07x = 3,536.23
  5. Step 5: Solve for x
    x = 3,536.23/51.07
  6. Step 6: Final answer
    x = 69.25

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.