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Finding the Fourth Proportional to 51.29, 70.71 and 32.83

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Solution

The fourth proportional to 51.29, 70.71 and 32.83 is: 45.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.29 : 70.71 = 32.83 : x
  2. Step 2: Convert to fraction form
    51.29/70.71 = 32.83/x
  3. Step 3: Cross multiply
    51.29x = 70.71 × 32.83
  4. Step 4: Simplify right side
    51.29x = 2,321.75
  5. Step 5: Solve for x
    x = 2,321.75/51.29
  6. Step 6: Final answer
    x = 45.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.