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Finding the Fourth Proportional to 51.57, 71.22 and 36.07

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Solution

The fourth proportional to 51.57, 71.22 and 36.07 is: 49.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.57 : 71.22 = 36.07 : x
  2. Step 2: Convert to fraction form
    51.57/71.22 = 36.07/x
  3. Step 3: Cross multiply
    51.57x = 71.22 × 36.07
  4. Step 4: Simplify right side
    51.57x = 2,568.91
  5. Step 5: Solve for x
    x = 2,568.91/51.57
  6. Step 6: Final answer
    x = 49.81

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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.