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Finding the Fourth Proportional to 51.98, 72.06 and 49.24

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Solution

The fourth proportional to 51.98, 72.06 and 49.24 is: 68.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.98 : 72.06 = 49.24 : x
  2. Step 2: Convert to fraction form
    51.98/72.06 = 49.24/x
  3. Step 3: Cross multiply
    51.98x = 72.06 × 49.24
  4. Step 4: Simplify right side
    51.98x = 3,548.23
  5. Step 5: Solve for x
    x = 3,548.23/51.98
  6. Step 6: Final answer
    x = 68.27

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.