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Finding the Fourth Proportional to 51.94, 71.33 and 48.20

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Solution

The fourth proportional to 51.94, 71.33 and 48.20 is: 66.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.94 : 71.33 = 48.20 : x
  2. Step 2: Convert to fraction form
    51.94/71.33 = 48.20/x
  3. Step 3: Cross multiply
    51.94x = 71.33 × 48.20
  4. Step 4: Simplify right side
    51.94x = 3,437.78
  5. Step 5: Solve for x
    x = 3,437.78/51.94
  6. Step 6: Final answer
    x = 66.19

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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.