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Finding the Fourth Proportional to 50.98, 75.58 and 49.90

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Solution

The fourth proportional to 50.98, 75.58 and 49.90 is: 73.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    50.98 : 75.58 = 49.90 : x
  2. Step 2: Convert to fraction form
    50.98/75.58 = 49.90/x
  3. Step 3: Cross multiply
    50.98x = 75.58 × 49.90
  4. Step 4: Simplify right side
    50.98x = 3,771.44
  5. Step 5: Solve for x
    x = 3,771.44/50.98
  6. Step 6: Final answer
    x = 73.98

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.