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Finding the Fourth Proportional to 51.92, 71.29 and 48.59

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Solution

The fourth proportional to 51.92, 71.29 and 48.59 is: 66.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.92 : 71.29 = 48.59 : x
  2. Step 2: Convert to fraction form
    51.92/71.29 = 48.59/x
  3. Step 3: Cross multiply
    51.92x = 71.29 × 48.59
  4. Step 4: Simplify right side
    51.92x = 3,463.98
  5. Step 5: Solve for x
    x = 3,463.98/51.92
  6. Step 6: Final answer
    x = 66.72

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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.