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Finding the Fourth Proportional to 51.36, 77.48 and 48.83

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Solution

The fourth proportional to 51.36, 77.48 and 48.83 is: 73.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.36 : 77.48 = 48.83 : x
  2. Step 2: Convert to fraction form
    51.36/77.48 = 48.83/x
  3. Step 3: Cross multiply
    51.36x = 77.48 × 48.83
  4. Step 4: Simplify right side
    51.36x = 3,782.96
  5. Step 5: Solve for x
    x = 3,782.96/51.36
  6. Step 6: Final answer
    x = 73.66

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.