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Finding the Fourth Proportional to 49.60, 74.44 and 48.88

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Solution

The fourth proportional to 49.60, 74.44 and 48.88 is: 73.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.60 : 74.44 = 48.88 : x
  2. Step 2: Convert to fraction form
    49.60/74.44 = 48.88/x
  3. Step 3: Cross multiply
    49.60x = 74.44 × 48.88
  4. Step 4: Simplify right side
    49.60x = 3,638.63
  5. Step 5: Solve for x
    x = 3,638.63/49.60
  6. Step 6: Final answer
    x = 73.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.