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Finding the Fourth Proportional to 49.02, 72.92 and 48.94

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Solution

The fourth proportional to 49.02, 72.92 and 48.94 is: 72.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.02 : 72.92 = 48.94 : x
  2. Step 2: Convert to fraction form
    49.02/72.92 = 48.94/x
  3. Step 3: Cross multiply
    49.02x = 72.92 × 48.94
  4. Step 4: Simplify right side
    49.02x = 3,568.70
  5. Step 5: Solve for x
    x = 3,568.70/49.02
  6. Step 6: Final answer
    x = 72.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.