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Finding the Fourth Proportional to 51.32, 76.43 and 50.71

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Solution

The fourth proportional to 51.32, 76.43 and 50.71 is: 75.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.32 : 76.43 = 50.71 : x
  2. Step 2: Convert to fraction form
    51.32/76.43 = 50.71/x
  3. Step 3: Cross multiply
    51.32x = 76.43 × 50.71
  4. Step 4: Simplify right side
    51.32x = 3,875.56
  5. Step 5: Solve for x
    x = 3,875.56/51.32
  6. Step 6: Final answer
    x = 75.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.